Xanathar's Guide to Everything is a sourcebook published in 2017 for the 5th edition of the Dungeons & Dragons fantasy role-playing game. It acts as a supplement to the 5th edition Dungeon Master's Guide and the Player's Handbook.

The beholder is a fictional monster in the Dungeons & Dragons fantasy role-playing game. It is depicted as a floating orb of flesh with a large mouth, single central eye, and many smaller eyestalks on top with powerful magical abilities.