Elemental Body IV (Air)

You become a huge air elemental. You gain a +4 size bonus to your Strength, a +6 size bonus to your Dexterity, a +4 form natural armor bonus to AC, resist electricity 20, and vulnerability to acid. You also gain two 2d6 slam attacks and the whirlwind ability. You are immune to critical hits and sneak attacks while in elemental form and gain DR 5/—. Your movement speed is increased by 30 feet. Whirlwind: An air elemental can transform itself into a whirlwind and back again. The whirlwind is 40 feet wide, and every creature that spends a round in the whirlwind must succeed at a Reflex save or take 2d6 bludgeoning damage. While in whirlwind form, the elemental cannot attack, but it is able to use its abilities.