Elemental Elixir

This elixir infuses you with the raw power of the Elemental Planes, changing your body. Found in a metal flask, this elixir comes in four varieties - one for each element: air, earth, fire, and water. Each flask contains only one dose. Drinking the elixir grants you its power. A dose of elemental elixir transforms you into an elemental of your size and of the kind the elixir is keyed to. The transformation lasts for 30 minutes, although you can dismiss the transformation as a standard action before the duration expires. For example, a halfling drinking an air elemental elixir transforms into a Small air elemental, while an ogre drinking a fire elemental elixir becomes a Large fire elemental. For the duration of the transformation, your type becomes elemental and your subtype changes to match your new form. You gain the Strength, Dexterity, and Constitution scores of the new elemental form but retain your own Intelligence, Wisdom, and Charisma scores. You also gain all extraordinary and supernatural special attacks and qualities possessed by the new elemental form. Neither changing into the new elemental form nor returning to your natural form results in the healing of any hit point damage. If slain, you revert to your original form, although you remain dead.
Moderate transmutation; CL 7th. Craft Wondrous Item, polymorph, 700 gp, 56 XP, 2 days. Weight: 1/2 lb. Price: 1,400 gp.
Source: Dragon #347