Name: Doubling Cube Cost: 2 CMC: 2 Color: CID: Type: Artifact Rules Text: {3}, {T}: Double the amount of each type of unspent mana you have. Set/Rarity: Fifth Dawn rare, Tenth Edition rare, Secret Lair Drop rare, The List rare Legality: Legal in duel, Legal in modern, Legal in vintage, Legal in commander, Legal in predh, Legal in legacy, Legal in oathbreaker, Legal in penny Price: $20.21 Foil price: $29.50