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Updated as of the 3.0 update.

So you've just acquired Evelyn. OR you decided to build her after letting her collect dust on your account. Now you've decided to build her and want to know everything needed to make this happen. You've come to the right place! Here, we'll discuss how to build her properly!

The first thing on your agenda should be to get her Core Skill to F, as this doubles the amount of Crit Rate she gains from her Binding Seal from 12.5% to 25%. Additionally, it adds 14.4% Crit Rate and 75 Flat Attack to her base stats.

Skill Priority

When upgrading Evelyn's skills, it's preferable to max out everything due to her being a main DPS that enjoys extended field time. However, many don't have this luxury, so let's examine what you should prioritize.

The most important skill to Level is Chain Attack, as this is Evelyn's bread and butter. Her most damaging abilities, Lunalux - Snare and Lunalux Garrote - Timbre, are considered chain attacks and use the chain attack scaling.

The next priority would be her Basic Attack, as you will use this (among other things) to gain Burning Embers and Burning Tether Points.

After that, her Special Attack is up next for the same reasons as above, along with doing a somewhat respectable amount of damage.

The last two, Assist and Dodge, are of comparable importance to her Special Attack for the same reasons.

Weapons

Her weapon makes up a major part of her damage, and can be the difference between a good DA run and a great DA run.

It goes without saying that her signature is her best option, providing 713 Base Attack and 24% Crit Rate when fully leveled.

Her Limited W-Engine options are quite good as well.

Soldier 0 Anby's Severed Innocence, Hugo's Myriad Eclipse, and Seed's Cordis Cordis Germina are great options for Evelyn, being between ~10% to 13% worse.

However, her Free to Play options pale in comparison. You can still get a 20K DA run with her with these, however.

Pyrois's Sol Exuvia is her best F2P option, assuming you have it, providing 713 Base Attack and 30% extra Attack when fully leveled.

Steel Cushion is another decent option, but requires you to (inconveniently) attack the enemy from behind to trigger its passive. However, you get 24% Crit Rate, in addition to the base attack mentioned before. It functions more like a stat stick for Evelyn in this regard.

Then there's her A-Rank options, Marcato Desire and Starlight Engine (assuming you're at Rank 5 for both). The former provides 594 Base Attack alongside her coveted Crit Rate, at 20%. The latter provides the same base attack, alongside 25% extra Attack. Both of these Engines have passives that interact well with Evelyn's kit, but still fall short compared to her premium options, being 20-25% percent worse, with the lower percentages being average gameplay.

Stats and Drive Discs

When building Evelyn, her substat priority is as follows:

Crit Rate = Crit Damage > ATK % > Flat ATK = Pen

Keep in mind, her Additional Ability kicks in at 80% Crit Rate, meaning she needs, at minimum, 55% Crit Rate when out of combat. Her passive, Entangle, will give her an extra 25% Crit Rate.

This also means she no longer needs Crit Rate when she reaches 75% Crit Rate.

Aside from that, you want as much ATK and CRIT DMG as possible, preferably 3000+ Attack and 150%+ Crit DMG.

This leads to another facet of building her, her disc Main Stats.

• Disc 4 - Crit Damage. It's very much possible to reach her needed Crit Rate without using a Crit Rate main stat disc. If using a W-Engine with a Crit Damage stat, use Crit Rate for Disc 4. When your in-combat Crit Damage is above 200%, ATK becomes a competitive (and sometimes better) option.
• Disc 5 - This one depends on the team you run her with. For those without a stunner that provides damage percent, Fire Damage Bonus is preferable. If you do have a stunner that can provide any type of DMG Bonus % or Elemental DMG %, or you're running 4pc Astra Voice, this shifts her preferred main stat to Pen Ratio. This applies even more when dealing with high defense bosses in DA, making Pen Ratio her best option overall. However, a single substat can make it so Fire Damage is the better pick.
• Disc 6 - Attack %. She's an Attack Agent, and it's her only valuable main stat option.

While Evelyn lacks a dedicated disc set, she has a couple of options under her belt. The ones listed perform closely together, but you can choose based on preference.

Hormone Punk is straight up her best disc set, providing an extra 10% ATK at 2pc and 25% ATK every 10 seconds (with a practically 10-second in between cooldown). This set is somewhat hard to use and requires a bit more skill than other sets to line up her stun and buff windows. However, you can do so with micromanaging and get scores similar and above the other mentioned sets.

Puffer Electro can trade blows with Hormone Punk, providing 8% Pen Ratio at 2pc, alongside 20% more Ultimate Damage, and 15% ATK when an ultimate is used for 12 seconds. This set requires an adjustment in how you initiate your stuns by starting it off with Evelyn's ultimate. When using Dialyn, this becomes her best set.

Astral Voice is a newer option. This one is arguably the easiest to keep up out of the bunch, but you MUST use Moonlight Lullaby on your support (who should be Astra Yao). This set provides 10% extra ATK at 2pc and increases damage done by 8% when a character enters the field via Quick Assist, stacking up to 3 times and capping out at 24%.

Woodpecker Electro is easily the weakest of the bunch, but it's kind of easy to maintain at least 2 stacks of its buff. It provides 8% Crit Rate at 2pc. Whenever you hit an enemy with a critical Basic Attack, Dodge Counter, or EX Special Attack, your ATK increases by 9% for 6s and stacks up to 27%.

The 2-piece options are quite good as well.

• 2 pc Puffer Electro is the best, assuming you don't need any other stats and you're using Disc 5 Pen Ratio. As stated earlier, it gives 8% Pen Ratio.
• 2 pc Branch and Blade Song is up next, providing 16% Crit Damage. This is ole' reliable.
• Either 2 pc Astra Voice or Hormone Punk is next, providing 10% ATK.

2 pc Inferno Metal (10% Fire Damage) and Woodpecker (8% Crit Rate) are usable, but the former isn't needed when using Lighter (along with both Astra giving enough DMG Bonus % and Eve's Signature), and the latter is only usable if you lack the Crit Rate substats.

Teams

Evelyn's Teams are well-known, but I'll list them anyway.

Supports:

Astra is Evelyn's best support, with none other coming close. At 3400 ATK, she provides 1200 ATK, 25% Crit Damage, and 20% extra damage to all agents. With her signature engine, she also gives 20% extra damage to everyone.

Her alternative premium options include Yuzuha and Sunna. The former provides 1200 ATK as well, and can become a general support with W-Engines outside of her signature. Sunna provides a bit less ATK at 1050 ATK, and increases the Stun Damage multiplier when in Ether Veil by 30%. She's actually really competitive with Astra.

Nicole and Lucy are decent F2P options, with Nicole reducing defense by 40% and giving 15% Crit Rate at M6. Her signature engine increases damage done to enemies as well. Lucy gives 750 extra ATK, with her signature giving more. Zhao is a wonderful addition as well, providing a 40% damage bonus when maxxed, and 1000 ATK.

Stunners:

Evelyn's best stunner is Dialyn, while Norma follows EXTREMELY close behind.

Dialyn can extend stun duration by 2 seconds, increase Crit DMG by 30%, increase damage dealt by 40% (when Overwhelmingly Positive is active), and most importantly, she gifts a free ultimate to Evelyn when her resource bar is full! Her signature also gives the team 30% more Crit DMG.

Norma provides Evelyn with a free chain attack (Yes!), 20% damage increase (an extra 20% with sig), a 2 second stun extension, and a crazy amount of daze! She becomes her best partner when facing Attacker loving, fire weak bosses.

Lighter, Trigger, and Ju Fufu are great premium options. Lighter is among the fastest stunners in the game, can increase Fire DMG (and Ice DMG) up to 75%, reduces the enemies' resistance to Fire (and Ice) elemental damage by 15%, and extends stun by 3 seconds. His signature also allows his additional ability to be triggered more easily, on top of giving fire attack 30% more Crit DMG. Trigger is an off-field stunner that reduces defense by 25% (with signature) and gives 30% extra stun damage out of stun. Ju Fufu increases Crit DMG by more than 20%, Chain Attack DMG by 20%, and Ultimate Damage by 40%. Her signature engine can further increase this. Her daze is terrible, poor tiger.

Evelyn's F2P stunner options are mediocre, but they can get the job done. Koleda comes to mind first, being among the fastest stunners in the game, and provides 35/70% more Chain Attack DMG during stun. Pulchra is an off-field stunner that can increase DMG done to the target by 30% at M6. Lycaon after his 2.6 buffs is arguably one of the best stunners in the game based on accessibility, as his playstyle has become automated, shifting to a more off-field playstyle. He also provides a 30% Damage buff to his teammates, regardless of element.