Beacon of the Reed Sea: Assumes one stack. At two stacks, it outperforms other weapon options.

Verdict: Weapon rankings are assuming no Crystallize.

The Unforged: Weapon rankings are assuming no shield. With a shield this weapon performs similarly to Beacon of the Reed Sea and Wolf's Gravestone.

Redhorn Stonethresher: This weapon can overtake Wolf's Gravestone in terms of Eula's own damage if team provides enough ATK buffs, but Wolf's Gravestone can make up the damage difference by buffing team damage.

Serpent Spine: Weapon rankings are assuming max stacks, in practice this often means running a shielder. At [R5] this weapon performs similarly to Beacon of the Reed Sea.

Akuoumaru: This weapon will outperform Luxurious Sea-Lord at higher refinements. At [R5] it can perform similarly to Verdict and Skyward Pride.

Tidal Shadow: Weapon rankings are assuming the passive is active. At [R5] this weapon performs similarly to Serpent Spine [R1] at 5 stacks.

Lithic Blade: Assumes 1 stack.

Pale Flame (4): This is Eula's optimal artifact set and it relies on having a condition fulfilled in order to outperform Pale Flame (2) Bloodstained Chivalry (2). If you are able to sustain the conditional buff, you will be able to achieve a 50% Physical DMG Bonus + 18% ATK. Without using your Burst, you can sustain the Pale Flame's 4 piece set bonus because each stack lasts 7s and it refreshes per stack, and Eula's Skill cooldown is only 4 seconds when doing 1-taps, therefore you can keep the condition up. When using this set, it is recommended to not use Hold Skill cast until your Lightfall Sword is nearly about to end. This restriction is only for players who don't have Eula [C2+].

Bloodstained Chivalry (2): With Pale Flame (2), this is a non-conditional, consistent artifact set that provides you a constant 50% Physical DMG bonus. While that by itself is amazing, Pale Flame (4) can outperform this set because it also has another 18% ATK buff and is easily maintained through her low tap Skill cooldown.