Back when Upper Deck had the license to the World of Warcraft Trading Card Game, in each booster pack was an extra card that featured what was known as UDE points. Originally, these cards had a minigame printed on them, but since set 3, Fires of Outland, each point card became a material card, which could be used to create powerful crafted cards by mailing them to the company itself. On some backs, these would also feature rules and tokens for TCG-based battlegrounds. UDE points redemption was officially suspended in May 2010 and became completely invalid in June 2010.