Beholder

Beholder is a creature type used for a test card that depicts an iconic D&D creature. Its appearance is that of a floating orb of flesh with a large mouth, single central eye, and many smaller eyestalks on top with powerful magical abilities.

As a creature type, Beholder was first used on the Mystery Booster card Underdark Beholder. This was a Dungeons & Dragons crossover that was initially blocked by Hasbro. Another beholder was depicted on the Heroes of the Realm celebration card Kharis & the Beholder, which is also D&D related.

Beholder was introduced as as a black-bordered creature type in the full crossover set Dungeons & Dragons: Adventures in the Forgotten Realms with Baleful Beholder.