You are skilled at deflecting blows with your shield.

Prerequisites: Base attack bonus +8, Shield Focus, Shield Proficiency.

Benefit: Increase the AC bonus granted by any shield you are using by 1. This bonus stacks with the bonus granted by Shield Focus. Additionally, the AC bonus against ranged weapons granted by Shield Focus now affects ranged touch attacks (including rays and similar magical effects).

Special: If you are using the shield arm ability (or another ability that functions similarly to shield arm) and a ranged touch attack would've hit you if not for the shield bonus to AC that ability provides, your arm takes damage equal to the minimum damage the ranged touch attack would have dealt (for example, if the attack would deal 5d6+5 points of damage, your arm takes 10 points of damage, reduced by hardness and/or DR, as per normal). Ranged touch attacks that do not deal damage have their normal effect, but have their effects minimised and/or have their durations reduced by an amount equal to your arm's hardness.