Doubling Cube [Tenth Edition] San Diego Comic-Con 2017 Set: Diamond & Pearl: Stormfront

Set: Diamond & Pearl: Stormfront Type: Water Rarity: Holo Rare Retreat cost: Colorless

(Mana symbols on that permanent remain unchanged

Set: XY: Evolutions Type: Lightning Rarity: Holo Rare Retreat cost: Colorless

These beings embody the essence of true heroes long dead

Set: EX: Team Rocket Returns Type: Fire Rarity: Secret Rare Retreat cost: Colorless

Doubling Cube [Tenth Edition] San Diego Comic-Con 2017 Set: Diamond & Pearl: StormfrontSet: Tenth Edition Type: Artifact Rarity: Rare Cost: {2} {3}, {T}: Double the amount of each type of unspent mana you have. The cube's surface is pockmarked with jagged runes that seem to shift when unobserved.