They added Skirk Talent EN translations now.

When nearby party members trigger Frozen, Superconduct, Cryo Swirl, or Cryo Crystallize reactions against opponents, a Void Rift will be created near this opponent. This effect can be triggered once every 2.5s. 3 Void Rifts created by Skirk herself can exist on the field at once.
When Skirk hits an opponent with a Charged Attack in her Seven-Phase Flash mode, she will absorb the Void Rifts around her in a fixed AoE. Each Rift absorbed will grant her 8 Serpent's Subtlety stacks.

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When Hydro party members deal Hydro DMG, or when Cryo party members apart from Skirk deal Cryo DMG, Skirk will gain the "Death's Crossing" effect for 18s. Max 3 stacks, each stack's duration is counted independently.
Each "Death's Crossing" stack increases the Normal Attack DMG dealt by Skirk in Seven-Phase Flash mode by 10%/20%/70% and increases the DMG dealt by her Elemental Burst Foul Art: Ruin by 5%/15%/60%.