Wild Shape (Medium Water Elemental)

You become a medium water elemental. You gain a +4 size bonus to your Constitution, a +5 natural armor bonus, resist cold 20, and vulnerability to fire. Your movement speed is reduced by 10 feet. You also gain one 1d8 slam attack and the freeze ability. Freeze: A water elemental deals 1d6 cold damage in addition to damage dealt on a successful hit in melee. Those affected by the freeze ability must also succeed at a Reflex save or start freezing, taking 1d6 damage each round for an additional 1d4 rounds. Creatures that hit a freezing creature with natural weapons or unarmed attacks take cold damage as though hit by the freezing creature and must succeed at a Reflex save to avoid freezing.