Polymorph, Greater (Large Air Elemental)

You are in large air elemental form now. You have a +2 size bonus to your Strength, +4 size bonus to your Dexterity, a +4 natural armor bonus, resist electricity 20, and vulnerability to acid. You also have two 1d8 slam attacks and the whirlwind ability. You are immune to critical hits and sneak attacks. Your movement speed is increased by 30 feet. You may choose to resume your normal form as a full-round action; doing so ends the spell for you. Whirlwind: An air elemental can transform into a whirlwind and back again. A whirlwind is 5 feet wide, and every creature that spends a round in the whirlwind must succeed at a Reflex save or take 1d8 bludgeoning damage. While in whirlwind form, it cannot attack but it is able to use its abilities.