Stunning Attack (General)
Your punches (and similar attacks) are so accurate and powerful that you can stun your enemies.
Prerequisites: Str 13, Dex 13, base attack bonus +8.
Beneﬁt: You may use this feat with any of the following weapons: unarmed strike, buckler, gauntlet or pommel. You must declare that you are using the feat before making an attack roll; a missed attack roll ruins the attempt. It forces a foe damaged by your attack to make a Fortitude saving throw (DC 10 + ½ your level + your Str modiﬁer),in addition to dealing damage normally. If the defender fails his saving throw, he is stunned for one round, until just before your next action. A stunned character may not act and can neither dodge nor parry. Attackers get a +2 bonus on attack rolls against a stunned opponent. You may attempt a stunning attack once per day for every four levels you have attained. You may not attempt a stunning attack more than once per round.