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Doubling Cube + Voltaic Key + Rings of Brighthearth

Colorless
Doubling Cube
Doubling Cube (back)
Doubling Cube
Voltaic Key
Voltaic Key
Rings of Brighthearth
Rings of Brighthearth
Infinite mana artifacts you control can produceInfinite mana permanents you control can produceInfinite untap of artifacts you control

How it works

  1. Float 10 mana in your mana pool.
  2. Activate Doubling Cube by paying 3 and tapping it, causing you to add 7.
  3. Activate Voltaic Key by paying 1 and tapping it, targeting Doubling Cube.
  4. Rings of Brighthearth triggers, causing you to pay 2 to copy Voltaic Key's ability, targeting Voltaic Key.
  5. Resolve both Voltaic Key abilities, untapping Voltaic Key and Doubling Cube.
  6. Repeat from step 2.
Legal in:CommanderLegacyModernOathbreakerPredhVintage
1.5k decks$44.48