Blastoise (13/95) [HeartGold & SoulSilver: Unleashed] 020 where X is that spell's

where X is that spell's mana value

Set: Dissension Type: Legendary Creature — Human Advisor Rarity: Rare Cost: {2}{W}{U} White spells you cast cost {1} less to cast

Set: The List Type: Creature — Bird Wizard Rarity: Rare Cost: {2}{U} Flying

Set: IDW Comics 2012 Type: Sorcery Rarity: Rare Cost: {X}{1}{B} Spend only black mana on X

Set: Battlebond Type: Land Rarity: Rare Luxury Suite enters the battlefield tapped unless you have two or more opponents

Blastoise (13/95) [HeartGold & SoulSilver: Unleashed] 020 where X is that spell'sSet: HeartGold & SoulSilver: Unleashed Type: Water Rarity: Rare Retreat cost: Colorless,Colorless,Colorless