You punish your foes’ failures with a smack from your shield.
Benefit(s): When you have a shield equipped, if a foe in reach makes an attack against you and misses by 5 or more that foe provokes an attack of opportunity from you. If a foe attempts to make a combat maneuver targeting your shield (such as sunder) and after the maneuver is resolved your shield is still in hand and not broken or destroyed, that foe provokes an attack of opportunity from you. You can only use this attack of opportunity to attack the foe with your shield.
Additionally, you may make a number of additional attacks of opportunity per round depending on what kind of shield you have equipped (buckler = +1 attack of opportunity, small shield = +2 attack of opportunity, large shield = +3 attack of opportunity, tower shield = +1 attack of opportunity). You can only use these attacks of opportunity to attack foes with your shield.
Mythic Options: The Missing Core Feats. © 2013, Owen K.C. Stephens; Author: Owen K.C. Stephens