If a token card is put into a hidden zone, you must use a supplementary token card with a Magic card back to represent it. Since these don’t exist yet, you may need to be creative.

A Reassembling Skeleton token card is a 1/1 Skeleton Warrior creature with a mana cost of {1}{B} and the ability “{1}{B}: Return Reassembling Skeleton from your graveyard to the battlefield tapped.”

For effects that look for or modify the creation of tokens, creating token cards isn’t the same as creating tokens.

Unlike a normal token, a token card doesn’t cease to exist in a zone other than the battlefield. It’s both a token and a card. It can move between zones any number of times and continues to exist for the rest of the game.