From publisher blurb: The 3.5 Open Game License System isn’t dead, it's UNDEAD! In Gauric Challenges 1, you will find: Rules for traps. Rules for two base classes and two prestige classes specifically for antagonists. Rules for advancing creatures. Over 100 different sentient races of Fey, Giants, Humanoids, Monstrous Humanoids, or Outsiders to befriend or challenge any adventuring group. The most dangerous creature is not the one with claws and teeth, but the one who can outthink its prey.