Wild Shape (Medium Air Elemental)

You become a medium air elemental. You gain a +4 size bonus to your Dexterity, a +3 natural armor bonus, resist electricity 20, and vulnerability to acid. Your movement speed is increased by 30 feet. You also gain one 1d6 slam attack and the whirlwind ability. Whirlwind: An air elemental can transform itself into a whirlwind and back again. The whirlwind is 15 feet wide, and every creature that spends a round in the whirlwind must succeed at a Reflex save or take 1d6 bludgeoning damage. While in whirlwind form, it cannot attack, but it is able to use its abilities.