pf2e.fyi
From Pathfinder Impossible Magic, which isn't enabled.

Draw Blood

SPELL 2
Traditions occult, primal
Cast
Range touch
Targets 1 living creature
Duration 1 minute

The palm of your hand grows a mouth with impossibly long fangs that ache to drink your enemies' blood. Make a melee spell attack against a target. On a hit, you deal 4d4 piercing damage and 2 persistent bleed damage (or double damage on a critical hit). For the duration of the spell, you regain rank (minimum 2) vitality healing Hit Points each time the target takes bleed damage.


Heightened (+1) The piercing damage increases by 2d4, and the persistent bleed damage and healing increase by 1.
Pathfinder Impossible MagicORC