Paradox Engine [Aether Revolt Prerelease Promos] Cat Construct where X is that spell's

where X is that spell's mana value

where X is 1 plus the exiled creature's mana value

untap Mana Vault

Set: Shadows over Innistrad Type: Enchantment Rarity: Rare Cost: {1}{G} Creatures you control have "{T}: Add one mana of any color

Set: Planeshift Type: Instant Rarity: Rare Cost: {W} Kicker {W} (You may pay an additional {W} as you cast this spell

Paradox Engine [Aether Revolt Prerelease Promos] Cat Construct where X is that spell'sSet: Aether Revolt Prerelease Promos Type: Legendary Artifact Rarity: Mythic Cost: {5} Whenever you cast a spell, untap all nonland permanents you control. "One look at this glorious item convinced me that Kaladesh deserved my full attention. Sure enough, my time here has yielded exquisite fruit." Tezzeret