Improved Unarmed Strike (Combat)Modifier
You are skilled at fighting while unarmed.
Benefit: You are considered to be armed even when unarmed—you do not provoke attacks of opportunity when you attack foes while unarmed. Your unarmed strikes can deal lethal or nonlethal damage, at your choice.
Essentia: Your Unarmed Damage gain a Enhancement Bonus of +1 / Essentia
Normal: Without this feat, you are considered unarmed when attacking with an unarmed strike, and you can deal only nonlethal damage with such an attack.