Imperious Perfect [Champs and States] Avatar Incarnation Set: Beatdown Type: Sorcery Rarity:

Set: Beatdown Type: Sorcery Rarity: Common Cost: {X}{R} This spell costs {1} more to cast for each target beyond the first

Set: Kaladesh Prerelease Promos Type: Artifact Rarity: Rare Cost: {4} Each player may play an additional land on each of their turns

Set: Morningtide Type: Enchantment Rarity: Rare Cost: {1}{G} Whenever a creature enters the battlefield under your control

Set: Visions Type: Sorcery Rarity: Rare Cost: {2}{G}{G} As an additional cost to cast this spell

They only specify the consequences should you fail

Imperious Perfect [Champs and States] Avatar Incarnation Set: Beatdown Type: Sorcery Rarity:Set: Champs and States Type: Creature Elf Warrior Rarity: Rare Cost: {2}{G} Other Elves you control get +1 +1. {G}, {T}: Create a 1 1 green Elf Warrior creature token.