For a character with unpredictable allegiance, see Wild Card.

In many Tabletop Games, players will have their options limited by the supplies they have on hand, meaning if you don't have the last piece required to make a play, you'll have to make do without. However, some games have alternatives that can be subbed in for the missing piece. For example, if a player held two red cards, two green cards, and a wild card, they could use their wild to make a three-of-a-kind in either color without having to wait. Or if you need five stones to build something and only have four, you can spend them and a wildcard resource to build it without having to wait for your fifth stone.