Xanathar's Guide To Everything by Wizards of the Coast

A supplement for the fifth edition of a popular tabletop fantasy role-playing game that expands rules and options for players and Dungeon Masters: it presents dozens of new subclasses, spells, feats, and optional class features, plus expanded tools for character backgrounds, downtime activities, and tool proficiencies. It also supplies DM-focused content—encounter and trap tables, adventure-planning advice, random treasure and magic item options—and includes flavorful in-character sidebars and artwork to inspire play.

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