Benefit: The barbarian unleashes a terrifying howl as a standard action. All shaken enemies within 30 feet must make a Will save (DC equal to 10 + 1/2 the barbarian’s level + the barbarian’s Strength modifier) or be panicked for 1d4+1 rounds.
Special: Once an enemy has made a save versus terrifying howl (successful or not), it is immune to this power for 24 hours.
Pathfinder RPG Core Rulebook. Copyright 2009, Paizo Publishing, LLC; Author: Jason Bulmahn, based on material by Jonathan Tweet, Monte Cook, and Skip Williams.