You crush a bit of iron in your hand, infusing it with protective magic. You then cast the dust onto your allies' armor.

Encounter   ✦     Arcane
Minor Action      Close Burst 5

Target: You and each ally in the burst

Effect: Each target gains a +4 bonus to AC until the end of your next turn.

Published in Eberron Player's Guide, page(s) 53, Adventurer's Vault 2, page(s) 49.