Wild Shape (Medium Fire Elemental)

You become a medium fire elemental. You gain a +4 size bonus to your Dexterity, a +3 natural armor bonus, resist fire 20, and vulnerability to cold. Your movement speed is increased by 20 feet. You also gain one 1d6 slam attack and the burn ability. Burn: A fire elemental deals 1d6 fire damage in addition to damage dealt on a successful hit in melee. Those affected by the burn ability must also succeed at a Reflex save or catch fire, taking 1d6 damage each round for an additional 1d4 rounds. Creatures that hit a burning creature with natural weapons or unarmed attacks take fire damage as though hit by the burning creature and must succeed at a Reflex save to avoid catching fire.