Seamantle

You sheathe yourself within a churning column of pure elemental water up to 30 feet high that fills your space. You can see, hear, and breathe normally within the seamantle, but attacks against you are treated as if you were under the surface of the water. You gain improved cover (+8 cover bonus to AC, +4 bonus on Reflex saves) against foes that do not have freedom of movement effects. You also gain immunity to fire. The cover granted by the seamantle does not enable you to make Stealth checks or prevent attacks of opportunity. Magical attacks against you are unaffected unless they require attack rolls.