Noblesse Oblige: A Treatise on Eula

Written by Sitri#9504
Updated for Version 2.3

Art by ♠Sea

You want to learn some Favonius Bladework? Heh, alright then, I’ll teach you…. Oh yes, I’ll teach you, alright, mark my words…

Eula

Preface

Welcome to the comprehensive and long overdue Eula guide! This guide took four months, a lot of work from a lot of people, as well as more procrastination than I should have ever done, but it is finally here.

Eula is one of the most interesting and complicated characters in the game, in all senses of the words. She is unique in both skill set and gameplay style, with many layers and incredible depth that one continues to learn and discover, even after months of playing her. I hope after finishing this guide, you will have a better understanding of not only the basics of Eula, but also her more in-depth knowledge and mechanics, and have an even better experience playing her. For those who do not own Eula, I hope this guide sparks enough curiosity and interest in her for you to consider rolling Eula to have a fun time, as much as I have had the pleasure of both playing and theorycrafting for her.

Before we dive in, I want to give special thanks to Artesians#0002 and Zanto#4984, with whom I have worked closely with during her release, and who are continuing to help me with expanding my knowledge on all things Eula. A lot of the showcase videos that you will find here are done by them. This guide would not have been possible without them, especially Zanto’s guides, which this guide is heavily inspired by. Check out his works on Raiden and Beidou, they’re great.

There are many more who I am to thank for making this guide as comprehensive as it is currently, but I have no space nor time to name everyone. It is not a one-person job. So again, thank you. You guys know who you are.

Time is short and precious, and we should get to the interesting parts instead of listening to my ranting.

Why should you play Eula? – An analysis

Eula was quite a contentious and debate-sparking character during the time of her release, and although a long time has passed since then, she is still quite an obscure and niche character that not many fully grasp.

What is Eula’s role in a team?

In short, Eula is a Physical hypercarry unit in terms of damage, field requirement, and investment levels, with nuking capability on her Elemental Burst. She is capable of dealing high bursts of damage while taking her and her allies’ resources and time to set up those incredibly high damage instances. 


Eula is a hyper carry, and you need to play around her. Most of her rotations and team comps should be built around setting her up to deal the most damage she possibly can. She also benefits from hyper investment, leveling her to 90, with Talent lv 9, or 10 if you have the crowns.


Eula is quite an inflexible character. Although she is of Cryo element, her damage composition is too skewed into Physical, and with long cooldowns, no separate ICD on her attacks, she cannot be run as a Reverse Melt Cryo carry. She should only be run as a Physical damage unit, and treated as such.

Misconceptions:

❧ Bosskilling:

There is this misconception that Eula is a very strong boss killer. This is partially correct, but not entirely. It is true her nuking potential means she is capable of accelerating a lot of bosses’ vulnerable phases, thus ending the fight sooner. However, a boss fight’s scripted nature means some bosses such as the Pyro Hypostasis and Maguu Kenki 2nd phase hard counter Eula with vulnerable phases shorter than the time it takes for her to unleash her full combo, especially with a very backloaded kit that requires time to ramp up.

❧ Bad AoE:

There is also the misconception that Eula has bad AoE but completely excels in 2-4 enemy count content. Again, this is only partially true. If you play Eula statically, without adapting your combo to floors, Eula has a very bad time against AoE content. 


However, as a claymore character, she is capable of hitting multiple enemies with one attack, and her Burst has a decently large AoE that, with good positioning, conscious gameplay and proper AI manipulation, you can destroy mob floors with. Also, mob content tends to feature humanoid enemies (hilichurls, treasure hunters, Fatuis), which inherently have low Physical damage resistance, which makes Eula’s AoE issues quite exaggerated. 


Unless you compare her to Venti, and no one wins against him.

❧ Strong Single Target:

The last misconception about Eula is she absolutely destroys single target floors or floors with a very low enemy count. 


This is again, partially correct. Eula has a much easier time in single target floors as she can focus her attention and damage on each target, which is considerably easier to do. But single target enemies, or floors with 2-4 enemies, feature a lot of mobility, which is Eula’s hardest counter. Enemies that can suddenly dash or teleport away from her Elemental Burst, her largest and most costly damage source, destroy Eula’s DPS. So again, pick your battles carefully with Eula.

❧ Conclusion:

Eula has little content where she excels in, but she is quite average in more content than people either positively or negatively rate her as. She is not a Ganyu, Xiao, Ayaka who are either more versatile or more powerful than her, or both, and she needs proper knowledge of certain matchups to be played well.

Pros and Cons

Down here I will list her pros and cons so you can make your own conscious decision. Please remember that only you can decide if a character is worth spending your time, money, and resources on. All I can do is give the most honest information possible to help with your decision. Spend responsibly.

Pros

  • Capable of dealing very strong, consistent, above-average Physical damage, with a very high damage Burst in every rotation.
  • At high investment, she is capable of clearing floors in one or two rotations with ease.
  • Inbuilt Physical and Cryo resistance shred, self-sufficient in her damage dealing without relying heavily on buffs, but also scales well with them.
  • Teams are cheap to build. Units required to perform optimally are rarely highly contested. Does not need Xingqiu or Bennett in most of her comps.
  • Respectable AoE with her Elemental Burst. Capable of low-time Abyss clears.
  • Constellations are player-friendly. Immensely strong C6, but also dolphin/lucky F2P-friendly with C1 giving a very respectable damage increase.
  • Very fun to play. Combo flows well and is very rewarding when pulled off successfully.

Cons

  • Needs quite high resin investment (hyper investing) to get into a competitive state.
  • Backloaded skill set means damage can be inconsistent; can fluctuates a lot depending on player skill, luck, enemy types, and content.
  • Requires three other members on the team to properly set her up in terms of energy and defense to function smoothly.
  • Decently mechanically intensive and requires good game sense to perform at top-level outside of investing.
  • Niche in terms of optimal content. Some enemies hard counter her and make her obsolete.
  • Hard to focus while playing with those thighs.

Article I: Character Overview

Art by Csyday 

[…] those who wish to master my signature “Favonius Bladework” technique have to pass my dance class first.

Eula

Eula’s entire kit, with its many interactive components, serves one ultimate goal: to make her Elemental Burst as strong as possible. From her faster-than-Claymore-standard Normal Attacks and personal Physical and Cryo resistance shred in her Elemental Skill to her passives, it all serves to assist you to get the most consistency and highest damage out of your Elemental Burst. Learning how to play with her kit to achieve this goal is the first step to your success with Eula.

I will go over each component of her kit, as well as tips and tricks on how to use them effectively.


Note: If you are not familiar with notation like “N1C” and “N2D”, review Attack String Notation in the Theorycrafting Library before continuing.

Talents

Normal Attacks: Favonius Bladework – Edel

EEula’s Normal Attack is quite straightforward in what it can do. It is a maximum 5-input chain auto-attack sequence, with a shorter than average execution frame compared to other Claymores, when they do not have an ATK SPD buff. Eula has high multipliers on each input, even among her weapon type, which is compensated in raw power for their slow attacks. These two factors allow Eula to dish out very consistent, above-average physical damage just from auto-attacking.


However, everything is not as simple as it is on paper. Although overall she does attack faster than an average Claymore user, her 5th input in the normal attack sequence (which we will call N5), takes a devastatingly long time to execute, which makes it unappealing to finish her entire attack chain. Because of this, we will tend to interrupt Eula’s attack sequence with dashes, jumps, or ability casts to get maximum value out of our Normal Attacks.


Down here is more technical information regarding Eula Normal Attacks, her different combos, and their differences in damage.


Eula’s Normal Attack combos, and effective damage differences

Attack StringNumber of hits/sequenceDifferences
N1D176%
N1J163%
N2D2101%
N2J289%
N3D490%
N3J484%
N4D5100%
N4J594%
N5D792%
N5J788%


There are only two combos you need to do and should master, on Eula: N4D and N2D. These two combos far out-damage any other Normal Attack chain you can do on her. While N2D gives a marginal damage increase, it is far more stamina-consuming, harder to execute, and more punishing. Because of this, N4D should always be the combo you default to when attacking with Eula. However, this does not mean N2D is useless. There are cases where its very short time requirement comes into use, and we will dive into one such case later.


Tips and tricks: Attack sequences can be interrupted and reset through abilities, not just through movement inputs. It is recommended to use Skills and Bursts in place of dashes and jumps when you have the chance, to maximize DPS.


N4D

N2D

N4 Tap E instead of N4D

Q&A


Q: Why don’t you talk about Eula’s Charged Attacks and Plunge Attacks? I know Claymore characters can do Dragonstrike, with some seeing damage increase, what about Eula?


A: We are going a bit ahead of ourselves with the way the guide is planned out, but in short, Eula’s Elemental Burst gains more damage based on the number of Normal Attacks, Elemental Skill and Burst hit in a duration. Because of this, we should only do Normal Attacks to maximize their damage. Also, Dragonstrike is a very mechanically demanding combo that is very hard to pull off consistently, and failing to Dragonstrike is a DPS loss, so it is better not to risk it.

Elemental Skill: Icetide Vortex

Eula’s Elemental Skill is a simple slash that deals Cryo damage. Your Tap E gives you Grimheart stacks, that you can expend on your Hold E to gain more damage, and at 2 Grimheart stacks, you gain access to a Physical and Cryo resistance reduction on enemies, which helps you to, again, deal more damage.


Eula’s Elemental Skill is the basis of why she is such a top-tier Physical damage carry and competitive hypercarry in general. One of the weaknesses of a Physical carry is they inherently lack modified or extra damage through reactions, and they have to compensate with higher base values on attacks. However, certain enemies hard counter these very one-dimensional high values with high Physical resistances (Whopperflowers, shielded Fatui Harbingers, the Ruin-class). Having an in-built Physical and Cryo resistance shred means Eula is reliable and self-sufficient with a high damage baseline, even in situations where she cannot gain access to Superconduct.


Here is an illustrative calculation of the damage gain by having a Eula-level shred when dealing Physical damage:


Damage gained after Superconduct and Icetide Vortex

BaseResistance+SuperconductIcetide Vortex Lv 9SC + Icetide Vortex
Ruin Guard100.00%30.00%70.00%54%94.00%
Whopperflower100.00%65.00%102.50%89.00%114.50%
Humanoid enemies100.00%90.00%115.00%107.00%127.00%
Shielded Fatui Harbinger100.00%24.00%60.00%44.00%84.00%

You can find a compiled list of Eula’s Elemental Skill’s technical information here

When should I use Tap E? When should I use Hold E?

Eula’s maximum particle generation with only Tap E is quite standard for a non-battery carry character. On a 40/60 cost Elemental Burst unit, this would be quite sufficient, but with an 80 cost Elemental Burst, Eula is hard-pressed into using another Cryo unit to supply her with enough energy to cast Burst off cooldown without stacking absurdly high ER. 


For general use case, you only want to use Hold E when you have 2 Grimheart stacks to maximize damage, and usually use it as an opener to your burst window, where you plan to stay on Eula to deal as much damage as possible on resistance-reduced enemies. Use Tap E when you have the chance to stack up on Grimheart stacks and cancel her auto-attacks, as discussed before.


About Grimheart


Grimheart is fairly straightforward. It gives you DEF%/stack and Interruption Resistances, no matter the stack. It is a strategic decision on whether to keep the stacks for extra defense or expend it with Hold E for more offense.

Elemental Burst: Glacial Illumination

Eula’s most important ability, and one you must understand the mechanics of thoroughly to play her efficiently. 


In simple terms, Glacial Illumination is a charged-up time bomb. After you cast it, you have seven seconds to gather Lightfall Sword stacks through using your Normal Attacks, Elemental Skill, and Elemental Burst. After the 7s duration is over, the Burst will detonate, dealing AoE Physical damage based on how many stacks you have gained.


In a standard rotation from Eula, half of your total damage composition should, and would if played correctly, come from Elemental Burst. Its massive multipliers and damage number once you learn how to get the maximum stacks every Burst cast is one of the most addictive factors in playing Eula. There are only very few Bursts in the game that can reach Eula’s level of damage, and most of them need outside assistance/require reactions. The only character in the game who currently beats Eula’s Burst without help is C2 Beidou, who is broken in her own right.


How to get maximum stacks


In her Elemental Burst’s description, Eula is said to be able to gain stacks through three sources, her Normal Attacks, Elemental Skill, and Elemental Burst. However, this is an inaccurate and quite ambiguous description of what is undoubtedly Eula’s most vital ability. Let’s rectify that.


The first thing one needs to know is that Eula gains stack on hits, not inputs. This means that if a Normal Attack has 2 hits per input, she gains 2 stacks on that input, even though it may be considered one attack. 


Second, although her skill description said she can gain stacks from her Elemental Burst, the initial damage and the detonation damage of Glacial Illumination does not grant stacks. However, her Ascension 1 passive, which creates a Shattered Lightfall Sword that deals damage based on the Elemental Burst’s 0 stacks Lightfall Sword damage, does grant stacks.


Third, you have to deal damage with the aforementioned abilities to gain stacks. Hitting elemental shields, Hilichurl stone or wood shields, hitting enemies in invulnerable frames, even if they register as hits, will not grant you stacks.


Here is a table of stacks gained by each part of Eula’s kit for easier visualization:


Lightfall Sword stacks gained per input

TypeStacks TypeStacks
N11Tap E1
N22Hold E 0 stack1
N34Hold E 1 stack2
N45Hold E 2 stacks4
N57Q0

N# stacks gained are counted in the attack sequence (Ex: N5 already includes stacks gained by N1->4)


On the issue of shield breaking


Glacial Illumination has an elemental gauge value on its initial cast of 2B GU Cryo. Its detonation deals Physical damage, therefore it has no Elemental Gauge. Although the damage from detonation is usually large enough to break down a large portion of smaller shields on Abyss Mages, it is not a recommended method to break shields, as it is far less efficient than using an actual element that is appropriate for the job.


On the issue of energy


With an 80 energy cost Elemental Burst, and no outstanding self generation, Eula needs one, or even two batteries to consistently Burst off-cooldown. Not only that, learning how to funnel energy into Eula by casting the battery unit’s Elemental Skill and then swapping into Eula so she can catch the particles on field for maximum energy efficiency is important in casting Burst every rotation without relying on high Energy Recharge stats.


Here is an example of energy funneling:


Don’t hesitate to swap after your Burst detonates to battery instead of DPSing. Getting your energy back to cast Burst next rotation is more important than a bit more DPS with your Normal Attacks.


On characters with very high burst cost (such as Eula), one of the ways one can efficiently battery them is by casting an Elemental Skill into Elemental Burst in quick succession, and while Elemental Burst animation plays out, the character would catch the traveling particles while in animation lock, thus saving time.


However, Eula is a special case. Her energy drains after her Burst animation finishes, around 1.5s, which is longer than any particle travel time, thus you cannot funnel energy into her with this tech. Be mindful of this when you are doing rotations on Eula, so that you do not waste your particles by tossing them away into the void.


For better visualization, check out this clip by Artesians on the matter: Eula energy why


Recommended ER thresholds


Recommended ER for popular battery choices in Eula compositions

Battery unitsER threshold
Rosaria + Sacrificial Bow Diona130-140%
Rosaria + Favonius Diona140-150%
Sacrificial Bow Diona160%
Raiden + Favonius Rosaria130-140%
Raiden + Sacrificial Bow Diona110-120%
Raiden + Favonius Diona130-140%
Raiden + Rosaria + Diona100%

Assuming proper funneling and 3 white particles from enemy/rotation


On the issue of snapshot


Glacial Illumination does not snapshot. This means her detonation damage will be calculated in real time, using stats at the time it detonates. This means Eula has very low synergy with units that have buff times below 10s, such as Sara, as her highest damage source cannot be buffed by their kit. Units such as Bennett, Xinyan C4, which run on a 12s buff timer, can work with Eula, but the timing may be quite tight depending on your rotations.  


On the issue of missing Bursts


Eula’s biggest strength is also her biggest weakness. She puts all her eggs into the Elemental Burst basket, and if she does not hit it, it devastates her real-time damage, not the enemy health bar. 


Because of this, be mindful of when and where you are casting your Elemental Burst. Make sure you have adequate time to ramp up your stacks and make sure that once you do you hit something with the detonation. It is not a bad idea to delay your combos or cut it short to reposition yourself, or to delay casting it in the first place, to guarantee you get the maximum value of using the 80 energy. Learn enemies’ movesets! Game knowledge is your best friend here.

Passives

Ascension 1: Rolling Rime

This ascension passive heavily incentivizes you to only use Hold E only when you have 2 Grimheart stacks. The damage loss of omitting this passive out of your rotation is quite considerable, so always be aware of your Grimheart stacks before casting Hold E.

Ascension 2: Wellspring of War-lust

A very useful and simple passive that just works, hassle-free. This ascension passive allows you to perform the fast combo of E Q Hold E, or E Q (other input) Hold E, and still get maximum damage out of your Hold E, even when you start at 0 Grimheart stacks. 

Talent Level Priority

Q >= NA >> E


Eula’s Burst is the strongest ability in her kit, and it should be prioritized, followed by her Normal Attacks. Although in a perfect scenario, levelling your Elemental Burst should give you the most damage all the time, Normal Attacks provide consistent damage in the case you miss that detonation (we have all been, and will continue to be there). 


Prioritize Burst, then Normal Attacks. Get both of them to Talent level 9, but Crown Elemental Burst first. 


Elemental Skill is a mediocre ability for damage. It has great utility, but its power per talent level gain is very mediocre, especially if Superconduct already brings enemies down to sub 0% Physical Resistance, at which point all Resistance shred value is halved. Level this last, you can even keep it at Talent Lv 6 if you want to be extra frugal.

Optimal Combos

Now that we have finished with our crash course over Eula’s kit, let’s put that knowledge to use and optimize your Eula gameplay. Her combos are quite complicated, and hard to perform consistently when you are being hammered down by enemies in Abyss, so it might take some time before you become really comfortable with it. As always, practice is key!

Standard DPS rotation (Balanced)

Difficulty level: B

Max possible stacks gain: 14


E > Q > N4 > Hold E > N4 > Detonation


Eula’s most generic, versatile, and consistent combo can do. This is a hassle-free, beginner-friendly, easy to pick up combo that every Eula player should know, and master. If there is only one combo here you need to learn, it is this one. 


This combo should give you consistently the 2nd highest damage on Eula of all combos while holding on to Grimheart stacks through half of the rotation means you gain adequate defense to play out the fight without needing to worry too much about being one shot. One of Eula’s largest issues is she severely lacks defensive options after she casts Glacial Illumination, as she should be focusing on gaining as many stacks as possible; this combo helps alleviate a lot of that.


Showcase video: Click me

Maximum DPS rotation (Offensive)

Difficulty level: S++

Max possible stacks gain: 14


E > Q > Hold E > N4D > N4 > Detonation


Do you see yourself as a mechanical god? Are you confident that you are a Eula master? This is the combo for you. The risks are high, and the returns are there.


Unlike the first combo, here you trade all your defensive Grimheart stacks for the full duration Physical/Cryo resistance shred, to output as much damage as possible. You are incredibly fragile, with no room for error. If executed perfectly, with no ATK SPD buffs, your remaining time should be around 0.05s, or 3 frames. I do not recommend doing this combo unless you absolutely want a challenge, but it is here for that reason regardless.


This combo is mathematically possible on paper, and as of now I have only one footage of someone doing it successfully. Many thanks to Isharah#6534 for the godlike showcase of the combo, with actual time to spare and show that the combo can still be optimized even further. Actual Faker.


Showcase video: Click me

Regeneration-focused DPS rotation (Defensive & Utility)

Difficulty level: A

Max possible stacks gain: 13


E > Q > Tap E > N4D > N2 > Hold E > N1 > Detonation


A niche combo that should only be used situationally. This combo nets you one more Tap E, which can be used to fund other members on your team, or if your Eula needs it in the next rotation. Also, this rotation will make your Eula the tankiest compared to other rotations, as you hold Grimheart stacks until the very end of your Burst duration.


As a carry, although defenses are appreciated, doing a combo that sacrifices a lot of damage for some defense is not something one should do. The situations where this combo springs up are rare, but it is useful to know regardless.


Showcase video: Click me

Beidou Driver DPS Rotation (Specialized)

Difficulty level: S

Max possible stacks gain: 13


E > N1 > Q > N1 E > N4D > N2 > Hold E > Detonation


A specialized combo designed to pair Eula with Beidou. This combo should allow you to get the maximum possible Stormbreaker discharge procs with Eula while sacrificing a fair amount of her damage. It is the most overloaded of all combos in terms of information and will take some time to get used to if you do want to play her well with Beidou. Outside of that specific pairing, you can ignore this in general play.


Showcase video: Click me

R3 Pines DPS Rotation (Whale)

Difficulty level: A

Wallet damage: S+

Max possible stacks gained: 15 stacks


N2D > N1 (3 Sigils Pines) > E > Q > N3 > Hold E > N5 > Detonation


A combo reserved for those who are lucky enough, or spend enough to at least a Refinement 3 Song of Broken Pines. At this point, you gain enough of an ATK SPD buff that this combo becomes possible, and you get the highest maximum stacks without utilizing C6. Do note you have to stack 3 Sigils of Whispers before doing this combo, so set it up with N2D – N1, from 0 stacks.

On the issue of attack speed

With how strict Eula’s Burst duration is to gain stacks, one may be tempted to use weapons/buffs that give you ATK SPD buffs to gain more stacks, or just to make combos easier to execute. Except for the Whale DPS rotation listed above, there are no currently known other methods with ATK SPD to bypass the maximum stacks listed above.


On a positive note, if you are just looking for a way to combo easier with much more leeway, ATK SPD will still help you there, and you will have more margin of error. 


Showcase video by MichaelB: Click me


Tips and tricks: Eula’s Elemental Burst’s stack accumulation has an ICD of 0.1s. As a claymore wielder, usually this very marginal ICD does not impede her stack gains. However, After you cast hold E, Ascension 1 (Roiling Rime) procs after a delay, not right after, and around when you are performing N1. 


Because of this, there is a case of hit overlay, preventing you from getting 1 stack. Due to this, it is advised to delay your combo after casting Hold E by a tiny bit instead of inputting Normal Attacks right away to maximize your Burst’s damage.

Constellations

*Author’s notes: Rolling for a 5* unit is already a hard and expensive task, not to mention weeks-on-end of saving. Rolling for constellations is that, times how many copies you need. I try to do my due diligence in giving you the most unbiased information possible, but at the end of the day, these numbers do not mean much outside of the context of your own enjoyment. Make your own decision according to your own financial situation. Spend responsibly.

Constellation 1: Tidal Illusion

Every time Icetide Vortex’s Grimheart stacks are consumed, Eula’s Physical DMG is increased by 30% for 6s.

Each stack consumed will increase the duration of this effect by 6s up to a maximum of 18s.


DPS increase: 10.5%

Cumulative DPS increase: 10.5%


A very straightforward Constellation that gives you very good damage gain as you flow naturally through your rotation. You do not have to change anything with your playstyle with this constellation, just consider it free damage. It even gains more value outside of your Burst rotation, as it can extend up to 18s, which carries well over into your Burst downtime. 


Just remember, having this constellation means you are now triply incentivized to hit that 2 stack Grimheart Hold E for the most consistent and highest damage gain possible. Don’t forget the stacks!

Constellation 2: Lady of Seafoam

Decreases the cooldown of Icetide Vortex’s Holding Mode, rendering it identical to Tapping CD.


DPS increase: <1%

Cumulative DPS increase: 10.5%


A quite niche, situationally good constellation. During your Burst rotation, which is your most important one, C2 does not change how you should, and would, do any combos. Casting E is too much of a time investment compared to just Normal Attacking, and you might lose stacks instead of gaining any. 


This constellation will see the most power when you are in Burst downtime, and stay on Eula. You net a maximum of 27 particles/min just using Hold E off cooldown, 21% more energy than the spamming Tap Es. However, in synergy with C1, you should still do Tap E – Tap E – Hold E for maximum damage, which nets you 24 particles/min, 9% higher than spamming Tap Es.


Although on paper, this constellation extends more than just higher particle generation, it is not a damage increase as your Burst downtime is never going to be long enough for this constellation to see a damage gain, assuming proper play. Think of it as a utility buff.

Constellation 3: Lawrence Pedigree

Increases the Level of Glacial Illumination by 3.

Maximum upgrade level is 15.


DPS increase: 17.8%

Cumulative DPS increase: 30.2%


When half your damage comes from your Burst, a 3 level upgrade to the talent is completely cracked. Not much to say here, it is a straight damage increase, no questions asked. You will see bigger numbers.

Constellation 4: The Obstinacy of One’s Inferiors

Lightfall Swords deal 25% increased DMG against opponents with less than 50% HP.


DPS increase: 6%

Cumulative DPS increase: 38%


This constellation is not that great, as the increased DMG% is additive with your other bonuses such as Physical DMG% from your artifact/weapon. This lowers its overall damage gain. 


When you cast your Burst on Eula, unless the enemies are very tanky and need multiple Bursts to kill, Lightfall Sword does not often detonate when they are sub-50% HP, thus lowering its practicality. Mediocre constellation.

Constellation 5: Chivalric Quality

Increases the Level of Icetide Vortex by 3.

Maximum upgrade level is 15.


DPS increase: 1.8%

Cumulative DPS increase: 38%


Your Elemental Skill makes up an incredibly marginal direct damage gain, while your Physical/Cryo Resistance Shred caps out at Talent lv 10, an achievable point without needing this constellation. Ascension 1 procs on Hold E cast, but the damage scales with your Burst’s Talent level, not Skill’s. Not a good constellation to aim for.

Constellation 6: Noble Obligation

Lightfall Swords created by Glacial Illumination start with 5 stacks of energy. Normal Attacks, Elemental Skills and Elemental Bursts have a 50% chance to grant the Lightfall Sword an additional stack of energy.


DPS increase: 40.6%

Cumulative DPS increase: 97.7%


If you get here, you are an absolute whale, and you are rewarded appropriately for it. Undeniably Eula’s strongest constellation, it is understandable why it is a C6. Eula’s Elemental Burst caps out its damage at 30 stacks, but C6 is the only way you can hit that threshold, for the highest single-instanced, achievable damage in the game. 


Not only does this constellation open up your damage ceiling, but it also means you can play Eula at a much more lenient level just to hit baseline damage. You can swap earlier for the same or higher amount of stacks than a sub-C5 Eula, or you can play for the highest oneshot possible. This constellation is absolutely insane.


On average, expect going from 14 stacks per Burst to 25-26 stacks, and if you are lucky, 30. 

Article II: Gearing

Art by xUDe

Artifacts

Artifact Sets

Best in slot


4pc Pale Flame

Eula’s undisputed BiS artifact set. This set is made for her, and ever since her release it has kept its standing as the best set for Eula. 25 Physical DMG% at base, with 25% more and 18% ATK on a condition that Eula can trigger consistently in her Burst rotation with E Q – Hold E is huge. The passive also lasts way long into detonation, and if you want to stay on Eula for more after that. Always prioritize farming and using this set, unless your substats on it are very bad compared to other options. 

Alternatives


2pc Pale Flame + 2pc Bloodstained Chivalry

Your 2nd best option if you do not have a good 4pc Pale Flame set, or are in the process of farming it. It is basically full set Pale Flame, without the 18% ATK buff, which is not too significant of a loss once factoring in external ATK% buffs such as Noblesse, Tenacity of the Millelith, etc. Depending on your weapon and if it has a lot of ATK% on it, this set is a lot closer to 4pc Pale Flame than one might think. Do not hesitate to use this set if your substats on it are a clear winner over the full Pale Flame set.

2pc Pale Flame/Bloodstained + 2pc Gladiator/Shimenawa/Emblem of Severed Fate

Here we are getting into the mix and match territory. These options do not have high synergy with Eula, but they are very competitive stat sticks and can be compensated with good substats. The formula is: Physical DMG% + whatever substats you need, which with Eula is ATK% or ER%. 
If you need more ER to hit the ER threshold of ulting off cooldown, go with Emblem of Severed Fate. If you already have enough ER%, go with Gladiator or Shimenawa for a more offensive option.

4pc Emblem of Severed Fate

EoSF is a deceptively bad and quite misleading choice to run on Eula. While it is true a very large portion of Eula’s damage comes from her Burst, her Normal Attacks, which deal Physical Damage, are not negligible, and EoSF only buffs your Elemental Burst.
You need 200% ER (or 180% ER at base) to reach the same Physical DMG% buffs from 4pc Pale Flame or 2pc Pale Flame 2pc Bloodstained, and the DMG% buff is only applicable to your Burst. 200% ER is always overkill over what Eula needed, and that potential substat rolls should go into ATK% and Crit, not ER%. Only run if you have no other options. 

Mainstats and substats

Sands: ATK% > ER%


Eula is a Physical DMG carry, so her stat requirements are quite simple. ATK% should always be your go to. Eula usually needs around 140-150% ER on the high end and 120-130% ER on the lower end to Burst off cooldown. ER% sands gives you 52% ER at lv 20, and if you get lucky (or unlucky in this case) with some substats you can easily reach upwards of 170 ER%.


With proper team building and substat farming, you should never need that much ER% to meet your energy requirements, and it dumpster her personal DMG as you lose so much ATK%. Only run ER% if you have no other options to Burst off cooldown. 


Circlet: Crit Rate%/ Crit DMG%


As always, Crit is king for non-reaction carries. Choose whatever Crit mainstay that helps you balance a 1:2 crit ratio, and take substats into consideration as well.


Goblet: Physical DMG%


Not much to say here; she deals Physical DMG, so get the mainstat that benefits her. You should have enough ATK% from other sources that ATK% Goblet should never be an option to consider.


Substats:


Substats priority is as follow:

  1. ER% (until you can comfortably burst off cooldown) 
  2. Crit DMG%/Crit Rate% 
  3. ATK% 

On the issue of “crit fishing”

Eula’s unique kit also opens up a unique playstyle: Skewing your Crit ratio heavily into Crit Damage instead of keeping a 1:2 CR:CD ratio and reset floors until you get a massive damage Critical Hit with your Burst to oneshot floors. While this is certainly a viable tactic, this only works in floors with single waves, low enemy count. It is not recommended to be used as a general playstyle, and for general use and just for sustainability through multiple contents, stick with a 1:2 Crit ratio.

Weapons

For those who do not want to read through this section, here is a TL;DR table of weapon choices and their performance under different conditions so you can make a quick choice. 

Eula’s weapon rankings

Simulated with Lv 90 Eula, T10 Talents, 4 Pale Flame.
Crit Circlet – Phys Goblet – ATK Sands Unless specified
20 sub rolls with priority: Crit > ER > ATK
Lv 90 Hilichurl, affected by Superconduct
12.5s rotation: E Q N4 Hold E N4 (ult proc at N4) D N4 (13 stacks)
No external buffs, no resonance, dynamic weapon passives accounted for

In-depth weapon analysis in power order

Song of Broken Pines

It is no surprise that Eula’s signature weapon would be BiS for her. Having the highest base ATK of all 5* claymores and a Physical DMG% substat with more ATK% steroids in its passive benefits Eula greatly, not to mention the ATK SPD buff which means your combos would be a lot easier to perform. 10/10 weapon for Eula. Only weakness is that outside of Eula, Razor and Xinyan, no other Claymore wielders really want it. Look at your overall roster before deciding to pull for this.

Wolf’s Gravestone

The best generalist Claymore, and arguably weapon, in the game. It has the largest ATK% buff in the game on a single weapon, and it is teamwide. With this weapon, most outside ATK% buff is unneeded or has their opportunity cost reduced greatly. If its passive procs, it can easily out damage Song of Broken Pines. However, the 30% HP threshold condition is quite hard to proc on Eula before her Burst detonates, so although it is still incredibly strong, it sits at 2nd place due to its inconsistency.

The Unforged

Wolf’s Gravestone version 2, albeit weaker. This weapon also gives massive ATK buffs, and although it is a lot more consistent than Wolf’s Gravestone, you are forced to use a shield with Eula to get maximum power out of this claymore. If you do not have a Zhongli or Diona, this weapon is not as impressive as it seems. Even without shields it is still a 5* weapon with very good ATK% buffs, so it is still up there on the list.

Skyward Pride

Skyward Pride power and rankings are hard to pin down, as its power is heavily dependent on how much ER% you need. Eula actually makes very good use of its passive, as Skyward Pride’s airblades deal Physical Damage, and Eula’s kit can maximize its potential. If you need the ER%, it is at least a top 3 weapon. However, if you don’t need this weapon to hit the ER% threshold, or if it brings you too far over that ER% requirement, it can even be beaten by the best 4* options for Eula.

Serpent’s Spine

An absolute monster of a weapon, it is a surprise how it is even a 4*. With high Crit Rate substats, a universal DMG% buff, this weapon makes investing in Eula easier than even some 5* options above. Its only weakness is that it is also heavily contested among other claymores, so unless you have multiple copies, you have to make a decision of who get to use it. Best 4* option for Eula, uncontested.

Luxurious Sea-Lord

For how silly this thing looks, it is the current best F2P option for Eula. It is an event weapon, so you can R5 it with little cost, and at R5 it gives a 24% DMG buff for your Burst, while also having a very good ATK% substat. The on-hit damage you can proc once every rotation consistently is extra icing on the top. Heavily recommended for all F2Ps, if you can get over your Eula whacking people with a giant sardine.

Akuoumaru

Akuoumaru is an unstable weapon that has the potential to be the 2nd best 4* weapon for Eula after Serpent Spine, but also can be 3rd best after Sea-Lord, depending on how much Energy cost you are running in your composition. It is recommended to use Akuoumaru only if you are running Eula with Raiden to make most use of its Energy cost passive, and if you have high refinements on it, or if you do not have a Sea-Lord or Serpent Spine to spare for Eula. Still a very good weapon; do not hesitate to use if the conditions aforementioned apply to you. You can check the comprehensive weapon sheet at the top for specific thresholds and refinements where it matches up with her better options.

Lithic Blade

Another weapon that has a conditional ranking. Two of Eula’s best batteries are Rosaria and Diona, and they are from Mondstadt, while your best off field Electro applicators for superconduct are Raiden and Fischl. This means this weapon is usually stuck at 1-2 stacks, or in some cases even 0, pushing it behind Snow-Tombed and Archaic. However, in a composition where you can reach 2 stacks, this weapon beats all of the options under it. Quite situational; use with care.

Snow-Tombed Starsilver

Used to be Eula’s best F2P option until Sea-Lord arrived. It has fallen out of favor, but it is still a very competitive weapon on Eula, not to mention there are few who would contest this weapon from her. Its passive can be dodged and missed, which is its one point of inconsistency, but other than that, it is a useful and nice statstick that just works.

Prototype Archaic

Very similar to Snow-Tombed in power, but it trades Snow-Tombed’s higher damage ceiling for higher consistency. Use it if you don’t have anything better, you don’t need to feel bad about using it.

Blackcliff Slasher

This weapon shares many parallels with Lithic Blade. Incredibly powerful when everything lines up in its favor, but has a fairly underwhelming floor. At 3 stacks, it beats even Serpent Spine in damage, but the situations where you reach that power and it is also useful is very rare and niche. At 0-1 stacks, it is still a good weapon, but not worth enough to trade 25 Starglitter for.

Skyrider Greatsword

A surprise among the roster, but definitely a welcome one. At R5, it is at the same power of an R1 Snow-Tombed, which for a 3* weapon is incredibly impressive. If you are at this point where you have no other options, beggars can’t be choosers, and this is absolutely not a bad reason to beg for.

Royal Greatsword

The Royal weapon line up has always been a strange one, and not in a good way. While they have very high base ATK for a 4* weapon, along with ATK% substat, which is not a bad option to have, its passive is one of contradiction. The passive gets stronger the lower Crit Rate you have, but never becomes strong enough it can fully replace actually investing into Crit. Because of this, its passive becomes worse and worse the more investment you have on Eula, making it unappealing. Still, it works as a useful statstick, despite its passive.


Author’s notes: The options down here are all terrible for Eula, and should just not be used at all. I will still include descriptions for them, although it will be brief and does not go far out of “It’s bad.”

Whiteblind

Unlike Noelle, Eula does not scale on DEF%, and although it does give some ATK%, it is nowhere near enough to make it useful.

Katsuragakiri Nagamasa

This weapon not only has mediocre damage, it screws with your rotation, as with Eula standard combo (E Q – Hold E), it drains your energy and delays your burst cast. There is no reason to use this weapon; it not only has no synergy with Eula, it is anti-synergistic.

Rainslasher

Maybe if you are playing Shatter Eula. Maybe.

The Bell

HP% substat is useless; Eula is not Zhongli. Maybe one day this weapon will be good on someone, but not now, and not on Eula.

Sacrificial Greatsword

It has a high base ATK, which is appreciable, but the substat and passive is simply not applicable enough for Eula. She does not need an extra E to get energy, and the time doing that can be used to actually use a better battery to do the same job.

Favonius Greatsword

Terrible base ATK, and like Sacrificial, there is no reason for Eula to battery herself.

Article III: Team Composition and Synergy

Eula-Fischl Core


The original bread and butter Eula team comp. Most Eula teams that are easy and consistent to perform and play with decent quality of life rotations will follow this template. Fischl applies consistent, long-existing Superconduct, and other units keep Eula damage high and consistent, or provide her with defense. Except for Eula, all other units are usually 4*, even the optional ones, making it very F2P friendly. 


Here are some popular variations of this template and how to play them. Do note these are suggestions, you can build different comps with this template once you understand more about how each unit performs in a Eula team setting.

Eula-Fischl: Triple Cryo


A popular variation of this template is Triple Cryo: Eula-Fischl-Rosaria-Diona, to have the most consistent energy regeneration for Eula. The damage ceiling of this team is not the highest, but it is consistent, and the barrier of entry is quite low. Recommended if you just started playing Eula.


Rotation: Fischl E > Rosaria Q E > Eula E > Diona Hold E Q > Eula DPS Rotation (Repeat (with Fischl Q)) – 22 seconds

Eula-Fischl: Beidou Driver


The most mechanically intensive, and highest damage ceiling variation. Here you trade a bit of Eula’s damage to use the Eula Beidou Driver combo to enable Beidou to do massive off-field damage. A very energy hungry variation, your Eula will need upwards of 170 ER% to burst off-cooldown efficiently. It is recommended to end fights in around 1-2 Burst rotations, otherwise you might run into energy issues. Quite hard to pilot well; prepare to put in practice time. The rewards are very worth it though, as this comp scales very well with your Beidou’s investment levels.


Rotation: Fischl E > Diona Hold E Q > Eula E N2 > Beidou E Q > Eula Beidou Driver Rotation + N4 (Repeat) – 22 seconds

Eula-Raiden Core


The new, and more expensive, version of Fischl variation. Raiden’s Elemental Skill is basically a better Fischl in the context of a Eula comp. It applies consistent Electro to keep 100% uptime on Superconduct, and trades personal off-field damage for a lot more damage on other members’ Bursts, as well as Raiden’s on-field personal damage, which usually out-damages Fischl at the same investment. Also, Raiden significantly reduces the whole team ER% requirement with her top-tier team-wide energy regeneration, making team building and investing a lot easier. You trade all these benefits for a higher mechanical skill requirement, as both Eula and Raiden have quite complicated combos that need to be performed well to play efficiently.


Eula-Raiden compositions always have rotation times over 22 seconds, and most often approach the 25+ seconds mark. This means even though the damage per rotation of this variation is much higher than Eula-Fischl’s, the DPS, although still higher than traditional Eula-Fischl’s, is not exceedingly high enough that it invalidates any non-Raiden Eula user. On top of that, all Eula-Raiden variations have much more complex and active rotations, and a lot of the damage gain actually comes from fine-tuning your ER requirement and turning those spare substats into more offensive stats. Therefore, practically, unless you are very good and very dedicated, you will not see that much gain with Raiden compared to Fischl until much much later.


TL;DR: Eula-Raiden is good, and can be better than Eula-Fischl, but it is mostly a stylistic choice rather than a power choice. Use Raiden if you like her and want to pair her with Eula; you won’t miss out on too much if you don’t do it.


*Author’s notes: Eula Raiden are both very fragile units, even with their interruption resistances, and with both of them requiring a lot of uninterrupted field time, they are exposed to a lot of potential dangers. It is highly recommended for your Fill or Cryo slot to be a shielder, such as Zhongli or Diona, to make piloting this team easier on yourself.


Again, here are some variation suggestions:

Eula-Raiden: Triple Polearm


A standard Eula Raiden team where you fill generalist units that can support both Eula and Raiden in dealing DPS. The rotation of this comp is quite snappy, fast, and easy to get used to. You can replace Rosaria for Diona if you are uncomfortable with playing without a healer.


Rotation: Raiden E > Zhongli E > Rosaria E Q > Eula DPS Rotation > Raiden 2N4C N2C (Repeat) – 26 seconds

Eula-Raiden: Ultra Beidou Driver


Same as Eula Fischl: Beidou Driver, this comp trades a lot of Eula’s personal damage to enable Beidou, and with Raiden’s Elemental Burst buffs, Beidou can dish out some serious damage here. Also same as Eula Fischl variation, this comp is now even harder to pilot well. As always, practice is key!


Rotation: Raiden E > Beidou E Q > Diona Hold E Q > Eula N1 > Beidou Driver Rotation > N1 > Raiden Q 2N4C N2C  (Repeat) – 28 seconds


Showcase by Sitri: https://youtu.be/TCHiIRjXn_U

Eula-Raiden: Triple Cryo


Any triple Cryo/double battery Eula comps are very easy to play and easy to build ER requirements around, and that applies here for Eula Raiden. In fact, this is the only Eula comp variation where you can run 0% ER on Eula and still be able to Burst off cooldown, providing that you have a Sacrificial Bow on Diona. Not only that, rotations in this comp are smooth, with a lot of leeway for error without extending time too much. Heavily recommended for more casual players who want to play Eula-Raiden, but find Eula-Raiden technically difficult.


Rotation: Raiden E > Rosaria Q E > Diona Q Hold E > Eula DPS Rotation > Raiden Q 2N4C N2C  (Repeat) – 26 seconds

Eula Raiden: Lisa TTDS


My (new) personal favorite in terms of snappiness in gameplay. Lisa does not have a very positive reputation as a unit, and even less so as a filler in team compositions. However, she is a deceptively very good support for Eula in Eula Raiden comps. Lisa’s largest issue of a powerful but unsustainable Elemental burst is completely solved by Raiden who is an unmatched battery in the current state of the game. Throw Thrilling Tales of Dragon Slayers and Emblem of Severed Fate on your Lisa, get around 150% ER, and you get a massive ATK% steroid and DEF shred unit who can also dish out some respectable damage. 


Rotation: Raiden E > Diona Hold E Q > Lisa Q > Eula DPS Rotation > Raiden Q 2N4C N2C  (Repeat) – 25 seconds


Showcase by Sitri: Eula Raiden Lisa TTDS

Cryo battery position candidates

Diona

There is no unit Eula loves to have more than Diona. She gives Eula everything she needs, in one neat, cheap, 4* package. High bursts of energy generation in a short time with Hold E, proactive defense with shields, and reactive defense with her Elemental Burst healing. Diona with Sacrificial Bow and a double Hold E cast is the best energy generation method for Eula. Always use Diona if you can. Pair her with R3+ Sacrificial Bow, or a Favonius Warbow, and you are good to go.

Rosaria

Rosaria is the more offensive option to Diona’s defense, and in that regard, there is no better offensive battery for Eula than Rosaria, especially at C2. With consistent high energy regeneration, Crit Rate buffs, very noticeable damage with her own Elemental Burst, do not hesitate to use Rosaria if you need to use Diona somewhere else. She will serve you well in most situations.

Kaeya

Kaeya is a very slightly inferior option to Rosaria in a Eula comp, especially if Rosaria is at C2. While he can generate energy over a long duration of time better than Rosaria, the higher particle generated per cast by Rosaria makes her more appealing to Eula, who wants to get online as soon as possible. Still, a very good option, and he is free. 

Flex position candidates

Bennett

One of the strengths of Eula is that she does not need Bennett to perform. Her strict rotation times and combo patterns means she is quite restrictive with when and where she can use Bennett. In the worst cases, she can even make Bennett look mediocre. However, Bennett is still Bennett, and he is still broken. If you don’t need Bennett on your other team (somehow), you can use him here, but I will reiterate that again: you DO NOT need Bennett with Eula, use him somewhere better.

Zhongli

There is hardly anyone more universal than the Geo Archon in this game. It doesn’t matter who you are, he will fit just fine in any comp. His Elemental Skill’s 20% universal shred is not as apparently effective in a Eula comp with the abundance of Resistance Shred she has, but his shields provide unmatched comfort. Never a bad choice to use him if you have a spare slot.

Albedo

Like Zhongli, Albedo is an inert, unintrusive unit that just works, no matter where you throw him in. He does not provide much for Eula outside of extra damage, but if you have no better option, he is always a choice to consider, or just to put your mind at rest.

Kujou Sara

Sara, in a lot of ways, is another Bennett. But as no one can be as broken as Bennett, she has a lot more caveats to be used than him. Sara buff duration is only 6s, so you cannot get your detonation to be buffed. However, 500-600 bonus ATK even just on half your rotation is still certainly not ignorable. I would only recommend running Sara if you have her at least C2, as it reduces your necessary aiming field time by a lot, and I recommend running her with Raiden, especially if your Sara is C6, for maximum synergy.

Lisa

Lisa seems like a meme choice to recommend here, but if you don’t have any better options than above, she is not a bad choice at all, especially as a free, not highly demanded unit. Her Elemental Burst reduces 15% DEF, which can net you around 5-6% damage increase, and as a Thrilling Tales of Dragon Slayer carrier, this number can go higher. Stack ER% on her so she can Burst reliably fast, throw TTDS on her, and you got yourself a support. Do not count her out that quickly if you do not have another option.

Xinyan

Ok, no laughing. Xinyan got flagged as the worst unit in the game, but she has some value in a Eula composition, especially at C4. She gives a lot of things that Eula would want from a support. Physical DMG% buffs, a decently large shield for a 4* unit, and with C4 Phys Shred. Give her a chance. Maybe.

Exceptional variations

Geobros:


This composition forsakes an Electro applicator and therefore Superconduct for the bruteforce combo of Zhongli-Albedo, aka GeoBros. With Zhongli 20% universal Resistance Shred and Geo Resonance 15% DMG buff, along with more than enough shields, this composition trades a high damage ceiling for a much more comfortable Eula experience.


Rotation: Zhongli E Q > Albedo E Q > Cryo E Q > Eula DPS Rotation > Cryo E > Eula N2 E > Repeat


F2P oneshot:


Quite a meme comp, but it has been shown to work, so I will include it anyways. Do you ever want to feel like a whale, one shotting a whole floor in one rotation? This is your chance. Stack all sorts of unsustainable buffs and debuffs on Eula, and deal as much damage in one go as possible. You can replace Xinyan C4 with Zhongli for something more expensive. I take no responsibility for the sanity lost in resetting floors to get a good run.


Rotations:


Xinyan variation: Bennett E Q > Lisa Q > Eula DPS Rotation (Swap right after you connect your last hit) > Xinyan E 


*There is a delay before Eula’s burst goes off, if you have good enough ping, you can swap into Xinyan, cast her E and get the DEF Shred off before Lightfall Sword detonates.


Zhongli variation: Zhongli E Q > Bennett E Q > Lisa Q > Eula DPS Rotation


Showcase by Artesians: https://youtu.be/z4avNUneqU0

Article IV: Matchups (WIP)

The plan here for the near future is to compile all of Eula’s tips and tricks for each enemy matchups: which enemy she counters, which counters her, and what to do against each to maximize your performance with Eula. This is going to be a long-term project that I will update as time goes on. For now, it is not something with substance, so you can ignore this.

Eula Resources

Original Eula Guide on Google Docs by Sitri#9504 (for more recent updates)
Eula Mastersheet by ZΛNTO#4984, Sitri#9504, Artesians#0002, Agent_Eon#8245
Eula Database by KeqingMains

Closing thoughts

This project was probably the largest undertaking I have taken solo. While I have written guides with many others before, either in sections, or just consultation, it has not come close to an experience writing this guide was. It was long overdue, and again, my sincerest apology for the delay and my own procrastination. 


Eula has been out for a long time now, and although a lot of people have, and still are playing her, and probably know a lot about Eula, I hope anyone who read this guide would learn something new, and find some use from it. I also hope that if she gets a rerun, this would spark interest in more people to try her out and give her a chance. Eula is not a unit that is easy to like, and for good reason. She is not Ganyu, Xiao, Hu Tao, Bennett, Xiangling, who just works; she demands a lot of time and effort, but she is fun, and I hope people would have fun with her as well. 


Again, many thanks to those who had helped me in theorycrafting Eula, and have entertained many useful discussions that allow me to have enough ability to write this guide. It would not have been possible without them.


That’s it from me for now. Peace. 


-Sitri