From the publisher's website:

Weave exciting tales of heroism filled with magic and monsters. Within these pages, you’ll discover the tools and options you need to create detailed worlds and dynamic adventures for your players to experience in the Dungeons & Dragons roleplaying game.

The revised Dungeon Master's Guide is an essential rulebook for Dungeon Masters of the D&D game. The Dungeon Master's Guide has been reorganized to be more user friendly. It features information on running a D&D game, adjudicating play, writing adventures, nonplayer characters (including nonplayer character classes), running a campaign, characters, magic items (including intelligent and cursed items, and artifacts), and a dictionary of special abilities and conditions. Changes have been made to the item creation rules and pricing, and prestige classes new to the Dungeon Master's Guide are included (over 10 prestige classes). The revision includes expanded advice on how to run a campaign and instructs players on how to take full advantage of the tie-in D&D miniatures line.

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• Brand new: The book is new, unread, and unused in perfect condition with no missing or damaged pages. See the seller's listing for full details.

• Like new: The book looks new but has been read. The cover has no visible wear, and the dust jacket (if applicable) is included for hard covers. It has no missing or damaged pages, no creases or tears, and no underlining/highlighting of text or writing in the margins. It may have very minimal identifying marks on the inside cover as well as very minimal wear and tear. See the seller's listing for full details and a description of any imperfections.

• Very good: The book does not look new and has been read but is in excellent condition. There is no obvious damage to the cover the dust jacket (if applicable) is included for hard covers. There are no missing or damaged pages, no creases or tears, and no underlining/highlighting of text or writing in the margins. It may have very minimal identifying marks on the inside cover as well as very minimal wear and tear. See the seller's listing for full details and a description of any imperfections.

• Good: The book has been read but is in good condition. It has very minimal damage to the cover, including scuff marks, but no holes or tears. The dust jacket for hard covers may not be included. The binding has minimal wear. The majority of pages are undamaged with minimal creasing or tearing, minimal pencil underlining of text, no highlighting of text, and no writing in the margins. There are no missing pages. See the seller's listing for full details and a description of any imperfections.

• Acceptable: The book has obvious wear. It may have some damage to the cover, but its integrity is intact. The binding may be slightly damaged, but its integrity is still intact. There may be possible writing in the margins and underlining and highlighting of text, but there are no missing pages or anything that would compromise the legibility or understanding of the text. See the seller's listing for full details and a description of any imperfections.