Your sharp tongue and quick wit are so brutal that you can actually harm an opponent with words alone.
Benefit: Once per encounter you may, as a free action, insult an opponent with exceeding wit, issuing a brutal slight. Your opponent must make a successful Will save (DC 10 + half your character level + your Charisma modifier) or suffer a -1 morale penalty to armor class, attack and damage rolls, skill checks, and saving throws. This penalty lasts one minute for every three levels you possess.
Special: A successful save makes the creature immune to your insults until you gain another level.