Part 3 of my Weird Things You Can Do in Magic: The Gathering series digs into a strange corner of how tokens get their names.
Tokens have names too
Cards have names, and so do tokens. Usually a token's name comes from its creature type. That means a handful of tokens share both a creature type and a name with real cards. There are six and a half of them: Assembly-Worker, Dragon Egg, Goblin, Wizard, Nightmare, and the Shapeshifter and Illusion halves of a couple of split identities.
The weird bit
Because a token can share a name with a real card, you can do something daft with a name-referencing effect. Cast Eradicate on an Assembly-Worker token made by Urza's Factory, and it will let you search that token's owner's hand, graveyard, and library for the real Assembly-Worker creature card and exile every copy. A token, which normally leaves no trace, becomes a way to hunt down the actual cards.