From the publisher's web site: The Life-Shaping Handbook contains rules for creating life-shaped items and creatures, 2 new character races, almost 30 new feats, 8 new prestige classes, 30 new monsters, and 3 adventure sites for introducing players to the new rules. The Life-Shaping Handbook is designed for use in any Dark Sun 3.5 game. You will need the Player’s Handbook (PH), Dungeon Master’s Guide (DMG), Monster Manual (MM) as well as the Dark Sun Core Rules (DS3) to make use of the material in this book.