From publisher blurb:
Reap the Whirlwind!
Your enemies may believe that you wield mere spells and incantations of mortal devising. Their surprise will prove fatal when they find your true power; that you wield in your heart and hands the fery fury of the storm, the flame, and the sun itself.
Within this document you will find a brand new arcane character class, the Primalist, for use with the Pathfinder Roleplaying Game™. While other users of magic wield spells, the primalist generates and shapes raw elemental power directly, drawing from an inner pool of energy.
Also included are suggestions on how to best use this new class, and several new elemental monsters.