From Pathfinder Lost Omens Knights of Lastwall, which isn't enabled.

Corpse-Killer's Defiance

FEAT 10

Activity reaction

Trigger You destroy an undead foe.

You defy Tar-Baphon with every undead you destroy, using your victory to rally your allies. Allies that can see you gain a +1 status bonus to attack and damage rolls against undead for 1 round, or a +2 status bonus to attack and damage rolls against undead for 2 rounds if the undead foe destroyed was a creature of your level or higher.

Effect: Corpse-Killer's Defiance (Lower Level)

Effect: Corpse-Killer's Defiance

Pathfinder Lost Omens Knights of LastwallOGL