Mirror March [Ravnica Allegiance Prerelease Promos]Set: Ravnica Allegiance Prerelease Promos Type: Enchantment Rarity: Rare Cost: {5}{R} Whenever a nontoken creature enters the battlefield under your control, flip a coin until you lose a flip. For each flip you won, create a token that's a copy of that creature. Those tokens gain haste. Exile them at the beginning of the next end step.