Root Elemental [Scourge] SPA Tanque evolutivo sacrifice it unless {U} was

sacrifice it unless {U} was spent to cast it

You may play it without paying its mana cost

where X is the exiled creature card's power and Y is its toughness

Set: From the Vault: Transform Type: Creature — Human Wizard

Set: Aether Revolt Promos Type: Creature — Human Wizard Rarity: Uncommon Cost: {2}{U} When Trophy Mage enters the battlefield

Root Elemental [Scourge] SPA Tanque evolutivo sacrifice it unless {U} wasSet: Scourge Type: Creature Elemental Rare Cost: {4}{G}{G} Morph {5}{G}{G} (You may cast this card face down as a 2 2 creature for {3}. Turn it face up any time for its morph cost.) When Root Elemental is turned face up, you may put a creature card from your hand onto the battlefield.