You have survived many battles thanks to your skill with your shield.
Benefit: When performing a shield bash, you deal 1 additional point of damage. Also, once per day on your turn as a free action, you may provide one adjacent ally a +2 trait bonus to his Armor Class. This bonus lasts for 1 round, so long as you and the target remain adjacent to one another. You can only use this ability if you are using a shield. You retain your shield bonus to your armor class when using this ability.