"You touch some armor, causing it to glow as you enhance its defenses." (EPG 48)
Daily Utility Power
Tags: Arcane
"Minor Action"
"Melee: Touch"
"Target: You or one ally"
"Effect: The target gains a +1 power bonus to AC. When hit by an attack, the target can end this bonus as a free action to gain a +4 bonus to AC against that attack."