Master of the Forge Utility 12Blessing of the Forge
At your touch, your ally’s armor gains unmatched strength, causing even the mightiest blow to bounce off it.
Minor Action Melee touch
Target: One ally
Effect: Until the end of your next turn, the target gains a +2 power bonus to AC, or a +4 power bonus if the target is wearing heavy armor.
Special: You can use this power only once per round.
Published in Player's Handbook 3, page(s) 114.