You can strike opponents so hard you stun them.
Prerequisite: proficiency with bludgeoning weapon, base attack bonus +1
Benefit: As a full-round action, you can make a single attack roll with a bludgeoning weapon that inflicts normal damage. If the attack succeeds in damaging your opponent, they must make a Fortitude saving throw (DC 10 + your Wisdom bonus + half your base attack bonus) or be stunned for one round.