Through forbidden blood pacts, you have bound a spirit oni to your service.
Prerequisite(s): Knowledge (planes) 3 ranks; Lawful neutral, lawful evil, or neutral evil.
Benefit(s): Whenever you wear a specially crafted oni mask (which costs 50 gp), you gain a primary gore attack dealing 1d4 points of damage. If you have poison use, you can apply poison to this gore attack as a move action.
Pathfinder Player Companion: Haunted Heroes Handbook © 2016, Paizo Inc.; Authors: Alexander Augunas, Thurston Hillman, Isabelle Lee, Stephen Rowe, and Christopher Wasko.