From publisher blurb:
Warriors of the Wild is a fantasy d20 product line designed for both players and game masters. It offers well-balanced and thoroughly play-tested classes constructed around various animal, natural, and tribal themes. These classes are perfect for any combat-heavy game, be it in dungeons, cities, the wilderness, or other planes.
This product features the snake, a prestige class with requirements and abilities flexible enough to suit any combat-oriented character. Snakes are cunning and vicious warriors who have mastered the art of hypnotism. Their serpent-like stance and reflexes allow them to strike with surgical precision, causing frequent and deadly critical hits.