Hell Soul (HellSoul in the PS version) is a 2nd-level Black Element in Chrono Cross. While the success rate is relatively low, when HellSoul is successful the target cannot be revived after their Hit Points are reduced to zero during the current battle.
Description[]
When cast, a luminescent spiral afflicts the target, lifts them off the ground, and attempts to remove their soul from their body. When this is unsuccessful, the soul floats freely away, as opposed to being destroyed when this element is successful.