The Xanathar's Comprehensive Guide is a supplement manual for the role-playing game Dungeons & Dragons Next (D&D 5th edition).

The beholder Xanathar, the most infamous crime lord of Waterdeep, is known for gathering information on friends and foes alike. He archives knowledge about adventurers and ponders the best methods to defeat them.
In his twisted mind, he is truly convinced that he can catalog everything!

New rules and narrative options for all character classes in the Player's Handbook, including over 25 new subclasses.
New spells for both player characters and monsters.
New rules for traps, magical items, downtime activities, and much more...