Changes

|prereqs=[[BAB]] +3

|benefit=Foes cannot cast defensively while within your threatened area; furthermore, whenever a foe uses a spell-like or supernatural ability within your threatened area, you may make an attack of opportunity to interrupt their action. If you hit, they must make a Concentration check equal to 10 + damage dealt or lose the ability as though it had been a casted spell. You ignore also ignore concealment provided by spells, spell-like abilities, and supernatural effects (as well as similar effects like [[SRD:Mirror Image|Mirror Image]]), and all bonuses to [[AC]] granted by spells, spell-like abilities, and supernatural effects.

}}