Implement's Interruption

Trigger The target of your Exploit Vulnerability uses a concentrate, manipulate, or move action, or leaves a square during a move action it's using.

Requirements You're holding your weapon implement and are benefiting from Exploit Vulnerability against a creature. The creature must be within your reach if you're wielding a melee weapon, or within 10 feet if you're wielding a ranged weapon.

Your weapon senses a moment of weakness and guides your hand to strike down a foe. Make a Strike against the triggering creature with your weapon implement. If your attack is a critical hit, you disrupt the triggering action. This Strike doesn't count toward your multiple attack penalty, and your multiple attack penalty doesn't apply to this Strike.