Dungeon Master's Guide (D&D 3e)

From the back cover: You've got the Dungeons & Dragons(R) Player's Handbook, but you need more--you're the Dungeon Master, and it's up to you to create adventures and worlds for your friends' characters to experience, explore and conquer. This book contains everything you need--from special high-level classes to magic items, artifacts, and more! You're the Dungeon Master, and all the Dungeons & Dragons(R) secrets are yours!