From Pathfinder Lost Omens Cheliax, Infernal Inheritance, which isn't enabled.

Infernal Anguish

FEAT 8

Activity 1 action

Prerequisites Hellbound Aspirant Dedication

Requirements You are doomed, and your last action was a successful Demoralize action.

When you terrify your foes, you implant the fiendish visions of Hell into their mind. The creature you successfully Demoralized takes 4d6 mental damage or 8d6 mental damage if you're legendary in Intimidation. You then increase the value of your doomed condition by 1.

Pathfinder Lost Omens Cheliax, Infernal InheritanceORC