Discover the truth about the great conflicts of the D&D multiverse in this supplement for the world's greatest roleplaying game.
This tome is built on the writings of the renowned wizard from the world of Greyhawk; gathered over a lifetime of research and scholarship. In his travels to other realms and other planes of existence; he has made many friends; and has risked his life an equal number of times; to amass the knowledge contained herein. In addition to Mordenkainen's musings on the endless wars of the multiverse; the book contains game statistics for dozens of monsters: new demons and devils; several varieties of elves and duergar; and a vast array of other creatures from throughout the planes of existence.
