Mnemonic Betrayal [Guilds of Ravnica] SWSH223 The suns of Mirrodin have

The suns of Mirrodin have shone upon perfection only once

Set: Sun & Moon: Detective Pikachu Type: Lightning Rarity: Holo Rare Retreat cost: Colorless

If you control an Urza's Power-Plant and an Urza's Tower

An opponent chooses one of them

Set: HeartGold & SoulSilver: Triumphant Type: Trainer Rarity: Promo

Mnemonic Betrayal [Guilds of Ravnica] SWSH223 The suns of Mirrodin haveSet: Guilds of Ravnica Type: Sorcery Rarity: Mythic Cost: {1}{U}{B} Exile all opponents' graveyards. You may cast spells from among those cards this turn, and you may spend mana as though it were mana of any type to cast those spells. At the beginning of the next end step, if any of those cards remain exiled, return them to their owners' graveyards. Exile Mnemonic Betrayal.