Shattering Critical (Combat, Critical)

Your attack lands and causes your foe’s armor to shatter or weakens its natural defenses.

Prerequisite: Critical Focus, BAB +9

Benefit: When you score a critical hit, you also remove some of the target’s armor bonus, natural armor bonus, or shield bonus to AC. The amount of AC bonus lost is equal to the critical multiplier of the attack with which you score the critical hit. The AC loss remains until the target is healed of all damage (in the case of natural armor) or until it can remove and adjust its armor (in the case of armor or a shield). A target with no armor, natural armor, or shield bonus to AC is unaffected by this feat.

Special: You can apply the effects of only one critical feat to a given critical hit unless you possess Critical Mastery.