uncommon cursebound necromancy negative oracle 

Mystery bones

Cast [>] somatic

Range 30 feet; Targets 1 living creature

Saving Throw Fortitude

You siphon off a portion of the target's soul to bolster your own vitality. The target must attempt a Fortitude save or take 1d4 negative damage. You gain temporary Hit Points equal to the total amount of HP the target loses, including the HP lost from becoming drained.

Critical Success The creature is unaffected.Success The creature takes half damage.Failure The creature takes full damage and becomes drained 1.Critical Failure The creature takes double damage and becomes drained 2.

Heightened (+1) Increase the damage by 1d4.

Advanced Player’s Guide, page 233.