Sparkling with the musings of the wizard Mordenkainen, this tome features a host of creatures for use in the Dungeons & Dragons roleplaying game. Compiling and updating monsters that originally appeared in Volos Guide to Monsters and Mordenkainens Tome of Foes, these creatures represent some of the most benevolent and malevolent forces that D&D heroes might face.

The book also gathers together fantastical peoples from many different worlds. Each of these peoples represents a race option when you create your D&D character, expanding on the choices in the Players Handbook.