How can you create a combo with Pir, Imaginative Rascal, Iceberg, Doubling Season?
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[START OF COMBO]This combo can be formed with Pir, Imaginative Rascal, Iceberg, Doubling Season

Color identity: GU
Mana cost: {3}
Steps:
  1. Pay {3} to activate Iceberg, placing 4 ice counters on it.
  2. Remove all 4 counters, adding {C}{C}{C}{C}.
  3. Repeat.[END OF COMBO STEPS]

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

Other prerequisites:
  - All permanants must be on the battlefield
[END OF COMBO PREREQUISITES]
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