Dispelling Critical

Critical

Your blows attack the physical and arcane forms of your enemies at the same time.

Prerequisite: Arcane Strike, base attack bonus +11, ability to cast dispel magic.

Benefit: If you have dispel magic prepared or can cast it spontaneously, when you score a critical hit against an opponent, you may use a swift action to cast dispel magic to make a targeted dispel against that opponent.

Source: Ultimate Combat