Thousand-Year Storm [Guilds of Ravnica Prerelease Promos]Set: Guilds of Ravnica Prerelease Promos Type: Enchantment Rarity: Mythic Cost: {4}{U}{R} Whenever you cast an instant or sorcery spell, copy it for each other instant and sorcery spell you've cast before it this turn. You may choose new targets for the copies. Ral's storm crackled with mystical detections: Planeswalkers were infiltrating Ravnica.