Doubling Cube

Artifact    (CMC:2)

, : Double the amount of each type of mana in your mana pool.

The cube's surface is pockmarked with jagged runes that seem to shift when unobserved.

116 5DN • ENMark Tedin

™ & © 1993—2004 Wizards of the Coast

Legal in: Modern,Mirrodin Block,Legacy,Vintage,Freeform,Prismatic,Tribal Wars Legacy,Classic,Singleton 100,Commander

Oracle Text (click to copy):

Doubling Cube {2} Artifact {3}, {T}: Double the amount of each type of mana in your mana pool.

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View this MTG card on Gatherer

12/1/2004
Doubling Cube's ability is a mana ability.
12/1/2004
The "type" of mana is its color, or lack thereof (if the mana is colorless).
12/1/2004
Any restrictions on the mana in your mana pool aren't copied. For example, if you have  with no restrictions on it in your mana pool and  that can be used only to cast artifact spells, you'll end up with ,  that can be used only to cast artifact spells, and  that can be used for anything.

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