pf2e.fyi
From Pathfinder Lost Omens Divine Mysteries, which isn't enabled.

Leverage Anguish

FEAT 6
Activity reaction

Frequency once per day
Trigger You fail or critically fail a saving throw against a curse, death, emotion, or fear effect.

You leverage your emotional turmoil to mend your physical form. You regain (2 × (your Athletics proficiency rank − 1 (minimum 1)))d8 healing Hit Points. If you're a master in Athletics, you regain 4d8 Hit Points instead. If you're legendary in Athletics, you regain 6d8 Hit Points instead.

Pathfinder Lost Omens Divine MysteriesORC