How can you create a combo with Karn, the Great Creator, Voltaic Construct, Chromatic Orrery?
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[START OF COMBO]This combo can be formed with Karn, the Great Creator, Voltaic Construct, Chromatic Orrery

Color identity: C
Mana cost: 
Steps:
  1. Activate Karn's first loyalty ability, causing Chromatic Orrery to become an artifact creature until end of turn.
  2. Activate Chromatic Orrery by tapping it, adding {5}.
  3. Activate Voltaic Construct by paying {2}, untapping Chromatic Orrery.
  4. Repeat from step 2.[END OF COMBO STEPS]

Result:
  - Infinite card draw
  - Infinite colored mana
  - Infinite colorless mana[END OF COMBO RESULT][END OF COMBO]

Other prerequisites:
  - All permanants must be on the battlefield
  - Chromatic Orrery does not have summoning sickness.
[END OF COMBO PREREQUISITES]
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