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Full event details

Unleashing a punitive roar upon the enemy, she seizes control of the battlefield in an instant — only to hasten the moment she reunites with the Adjutant.

Weapon: Assault rifle
Element: Chaos
Role: Skill DPS

Standard Skill: Cycle of Lament

Tap: Nerida enters the [Styxflow] state, dealing Chaos damage to enemies in front of her and gaining stacks of [Wail Charge]. Tapping this skill again will end the [Styxflow] state.

Hold: Consumes all [Wail Charge] stacks, dealing Chaos damage to enemies in front of her.

Source

Support Skill: Stygian Oath

Nerida jumps backwards, dealing Chaos damage in front of her.

Ultimate Skill: Swirl of Reckoning

Nerida deploys a "Truth-Seer," causing [Wraith Haunt] stacks [see Deiwos passive] on enemies within range to no longer deal damage over time, but they gain an increased stack generation rate. While the skill is active, Chaos skill damage dealt by teammates against affected enemies will apply [Wraith Haunt] stacks. When the skill ends, consume all [Wraith Haunt] stacks on enemies within range to deal Chaos damage based on the amount of stacks consumed.

Deiwos Passive: Oblivion's Pull

When equipped with a Chaos weapon, skill damage dealt by Nerida applies stacks of [Wraith Haunt] based on the damage dealt.

vic note: it is highly likely that [Wraith Haunt] stacks deal damage over time but is not listed here for some reason, as it would make her currently available ultimate skill details make a lot more sense.