PFSRD:Improved Awesome Blow
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Improved Awesome Blow (Combat)
You are skilled at sending your opponents flying.
Prerequisites: Str 13; Awesome Blow or awesome blow class feature; Power Attack
Benefit: You receive a +2 bonus on checks to perform an awesome blow combat maneuver. You also gain a +2 bonus to your combat maneuver defense whenever an opponent tries to perform an awesome blow combat maneuver against you. Whenever you successfully perform an awesome blow combat maneuver, your opponent's movement provokes attacks of opportunity from all your allies (but not from you).
Normal: Creatures moved by awesome blow do not provoke attacks of opportunity.