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

Diabolic Usurpation

FEAT 4

Prerequisites Infernal Pactbreaker Dedication

You know how to siphon the power hellish deities give devils without offering up worship. You gain the cleric's Domain Initiate feat but must select fire, trickery, or tyranny as your domain. You cast that domain's domain spell as a divine focus spell, and you Refocus by reviewing the arguments and clauses in your contract folio.

Special You can take this feat up to three times, selecting a different domain each time.

Pathfinder Lost Omens Cheliax, Infernal InheritanceORC