Banishing Critical

(Critical, Combat)
With your combination of combat and spellcasting prowess, you send otherworldly monsters back to their place of origin.
 

Prerequisites

Critical Focus, ability to cast dismissal or banishment, Caster Level 9th.
 

Benefit

When you confirm a critical hit with a slashing or bludgeoning weapon, you may cast dismissal or banishment on that target as an Immediate Action, and the target takes a -4 penalty on its Will Save to resist the spell's effect. You must have dismissal or banishment prepared or otherwise available to cast, and using this ability casts the corresponding spell.