Frightful Shape

Feats

When you use wild shape, it is supernaturally ferocious and disquieting in appearance, such that when you attack a creature, you can use this ferocity to frighten observers. Whenever you make an attack, enemies within 30 feet of you must succeed at a Will save (DC 10 + half your character level + your Charisma modifier) to resist being affected by your frightful shape. On a failed save, creatures with fewer HD than you become shaken, or frightened if they have 4 HD or fewer; in either case, the effect lasts for a number of rounds equal to your character level. Creatures that succeed on their saving throw are immune to your frightful shape for 24 hours. This is a mind-affecting fear effect.

Frightful Shape — Feats — Pathfinder: WotR Database