How can you create a combo with Karn, Legacy Reforged, Voltaic Construct, The Peregrine Dynamo?
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[START OF COMBO]This combo can be formed with Karn, Legacy Reforged, Voltaic Construct, The Peregrine Dynamo

Color identity: C
Mana cost: {1}
Steps:
  1. At the beginning of your upkeep, Karn triggers.
  2. Holding priority, activate The Peregrine Dynamo by paying {1}, copying Karn's ability.
  3. Resolve the copy of Karn's ability, adding at least {C}{C}{C}{C} that cannot be spent to cast nonartifact spells.
  4. Activate Voltaic Construct by paying {2}, untapping The Peregrine Dynamo.
  5. Repeat from step 2.[END OF COMBO STEPS]

Result:
  - Infinite colorless mana that cannot be spent to cast nonartifact spells[END OF COMBO RESULT][END OF COMBO]

Other prerequisites:
  - All permanants must be on the battlefield
  - Karn is not your commander.
  - You control at least one additional artifact.
[END OF COMBO PREREQUISITES]
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