Flipping a coin

The coin flip is a mechanic that creates a random effect in game play. The coin flip was introduced in Antiquities with Mijae Djinn, Ydwen Efreet and Bottle of Suleiman. Coin flips are mainly used on red cards and artifacts. If the card is multicolored, it's always red/blue. There is one black card with the mechanic (Tavern Swindler) and one green Un-card (Flock of Rabid Sheep).