Hyperreality

At the beginning of each player's second main phase, that player may design a new Magic: the Gathering card. If they do, each player votes real or unreal. Then, if there's a majority for real, the next card they play is a copy of that card. Otherwise, that player may choose a card from outside the game and put it in their hand. (To design a card, specify all costs, types, text, rarity, and art.)