pf2e.fyi
From Pathfinder #186: Ghost King's Rage, which isn't enabled.

Soul Ward

REACTION
Activity reaction

Frequency once
Trigger You would gain the Unconscious or Dying condition, or you would be destroyed

Effect You regain 200 healing Hit Points, up to your maximum Hit Points. All resistances and temporary Hit Points granted to you by Geb immediately end.
Pathfinder #186: Ghost King's RageOGL