You draw upon the life force of your natural surroundings and coalesce it into a semi-transparent snake-like form, roughly 8 feet in length. The snake is not living, nor is it a spirit, ghost, or any other form of undead, just a magically molded force. The spirit snake attacks under your command as a constrictor snake, using your BAB or a BAB of +5, whichever is better. It will attack with a bite which deals 1d3+4 damage, and with a successful bite can attempt a grapple as a free action. With a successful grapple, the snake constricts its foe for another 1d3+4 damage. The snake can be attacked and destroyed; it has an AC of 18 and 19 hp. The snake has a speed of 20 feet, but if the distance between you and the snake exceeds 60 feet it will vanish.
Range 80 ft.
Effect one 10-ft. long life-energy snake
This spell functions as spirit snake, except that the snake you create is 10 feet long. It attacks with a BAB of +13 (or yours, whichever is better), and deals 1d8+10 points of damage with both its bite and its constriction. The snake has AC 22, 63 hp, and can be up to 80 feet away from you.