UOG: Demise

Arcane Circle Bonus: +1 health regeneration per additional arcanist. +10 seconds duration per additional arcanist. +2% cure poison chance per additional arcanist.

Increases the recipient’s natural health regeneration for the duration of the spell. Can cure poison one time, and then the spell immediately ends (cancels cooldown timer). If the caster dies, the cooldown timer immediately ends.

it cures u when u cast it and have poison on yourself.