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Karn, Silver Golem + Doubling Cube + Umbral Mantle

Colorless
Karn, Silver Golem
Karn, Silver Golem
Doubling Cube
Doubling Cube (back)
Doubling Cube
Umbral Mantle
Umbral Mantle
Infinitely large creature until end of turnInfinite mana permanents you control can produceInfinite untap of creatures you controlInfinite mana creatures you control can produce

How it works

  1. Activate Karn by paying 1, causing Doubling Cube to become an artifact creature until end of turn.
  2. Activate Umbral Mantle's equip ability by paying 0, attaching it to Doubling Cube.
  3. Float at least 10 in your mana pool.
  4. Activate Doubling Cube by paying 3 and tapping it, adding at least 7.
  5. Activate Doubling Cube by paying 3 and untapping it, giving it +2/+2 until end of turn.
  6. Repeat from step 4.
Legal in:CommanderLegacyOathbreakerPredhVintage
58 decks$55.26