This spell functions as elemental body I, except that it also allows you to assume the form of a Medium air, earth, fire, or water elemental. The abilities you gain depend upon the elemental.
Air elemental: As elemental body I except that you gain a +4 size bonus to your Dexterity and a +3 natural armor bonus.
Earth elemental: As elemental body I except that you gain a +4 size bonus to your Strength and a +5 natural armor bonus.
Fire elemental: As elemental body I except that you gain a +4 size bonus to your Dexterity and a +3 natural armor bonus.
Water elemental: As elemental body I except that you gain a +4 size bonus to your Constitution and a +5 natural armor bonus.
The text on this page is Open Game Content, and is licensed for public use under the terms of the Open Game License v1.0a.
Sources:
SECTION 15