SHIELD FOCUS
Type: Combat, Tier 1.
Prerequisite: Proficiency (Light Armor, Shields).
Benefit: Select one type of shield that you're proficient with. While using the selected shield, you can use a reaction to redirect half or all damage from a physical attack to the shield instead of yourself. If the effect targets an area, you cannot direct all the damage to the shield, only half, unless it is a tower shield. If the effect is a spread effect, even a tower shield can't absorb all damage, only half. If this destroys the shield, any remaining damage is dealt to you instead.
Special: This can be taken multiple times, applying to a new selection each time.

IMPROVED SHIELD FOCUS
Type: Combat, Tier 2.
Prerequisite: Proficiency (Light Armor, Shields), Shield Focus.
Benefit: You ignore the speed penalties of shields you're proficient with. You also ignore the armor check penalties for anything you do one-handedly using a hand that is not holding the shield.

GREATER SHIELD FOCUS
Type: Combat, Tier 3.
Prerequisite: Proficiency (Light Armor, Shields), Shield Focus, Improved Shield Focus.
Benefit: Once per round, you can use Shield Focus as a free action instead of a reaction.
Special: This can be taken multiple times, increasing the tier and number of uses by 1 each time.