You become sheathed in scales of black, white, blue, or some other hue, and you gain mighty resistance.

Daily   ✦     Arcane
Minor Action      Personal

Effect: Until the end of the encounter, you gain resist 30 against a damage type of your choice: acid, cold, fire, force, lightning, necrotic, poison, psychic, radiant, or thunder. Once per round as a minor action, you can change the resistance to another of these types.

Published in Arcane Power, page(s) 38.