From the publisher: Liber Vampyr: Secrets of the Blood This sourcebook for the 3.5 OGL and the Pathfinder® Roleplaying Game is intended for mature audiences and provides players and Dungeon Maestros with guidelines and rules which bring vampires to life in a way fantasy roleplaying games have never done before. Included are rules that make vampire characters more accessible to players, as well as broadening the different styles of vampire available. Finally, the book contains an all new rules system which drives home the vampire’s hunger for blood, and will make your players see the game in a whole new way.