pf2e.fyi
From Pathfinder Lost Omens Ancestry Guide, which isn't enabled.

Lifeblood's Call

FEAT 13

The impulse to survive and continue fighting resonates deep within you. You gain a circumstance bonus to damage rolls on your melee Strikes equal to twice the sum of your wounded and doomed conditions (to a maximum of a +8 circumstance bonus to damage) whenever you have one or both conditions.

Pathfinder Lost Omens Ancestry GuideOGL