Aura overwhelming all schools [evil, lawful] CL 30th; Slot none; Price —; Weight 2 lbs.
Glowing like a shard of the sun, this strange weapon functions as a +5 axiomatic brilliant energy dagger that overcomes all damage reduction. Any creature of or near deity-level power (including archdevils, demon lords, empyreal lords, Horsemen, and similar beings) wounded by the Ihystear must succeed at a DC 35 Fortitude save or be stunned for 1 round.
As a full-round action, a creature bearing the Ihystear that succeeds at a DC 30 Strength check can snap the weapon in half. Doing so releases a terrible, deafening shriek that pierces the world and can be heard for dozens of miles. Any creature within 100 feet of the broken Ihystear—including the wielder—must succeed at a DC 30 Will save or be slain instantly. Those who succeed at their saves are rendered deaf and insane (as per the spells blindness/deafness and insanity). This scream continues for 3 rounds and pierces even magical silence. This is a mind-affecting sonic effect. At the end of this time, the Ihystear heals itself and returns to normal. However, there is a 50% chance each time it is broken that it randomly shifts to another plane.
Pathfinder Roleplaying Game Book of the Damned © 2017, Paizo Inc.; Authors: John Compton, Adam Daigle, Amanda Hamon Kunz, James Jacobs, Isabelle Lee, F. Wesley Schneider, Todd Stewart, and Josh Vogt.