Improved Sunder

Improved Sunder (General)
You are skilled at hitting weapons, shields or anything held in your opponent’s hands.
Prerequisite: Power Attack.
Benefit: When you strike at an object held or carried by an opponent (such as a weapon or shield) you do not provoke an attack of opportunity. You also gain a +4 bonus on any attack roll made to attack an object held or carried by another character.
Normal: Without this feat, you provoke an attack of opportunity when you strike at an object held or carried by another character.

Improved Sunder

Glimpses of Hyboria Elfbane