How can you create a combo with Nardole, Resourceful Cyborg, Chakram Retriever, Clockspinning?
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[START OF COMBO]This combo can be formed with Nardole, Resourceful Cyborg, Chakram Retriever, Clockspinning

Color identity: U
Mana cost: 
Steps:
  1. Activate Nardole by tapping it, adding at least {U}{U}{U}{U} that can only be spent to cast noncreature spells.
  2. Cast Clockspinning with buyback by paying {3}{U}.
  3. Chakram Retriever triggers, untapping Nardole.
  4. Resolve Clockspinning, putting a counter on Nardole, or putting/removing a counter from any other permanent you control, and then returning Clockspinning to your hand.
  5. Repeat.
  6. Once you have infinite {U} that can only be spent to cast noncreature spells, you may target any other creature using Chakram Retriever's trigger.[END OF COMBO STEPS]

Result:
  - Infinite magecraft triggers
  - Infinite mana creatures you control can produce
  - Infinite proliferate
  - Infinite storm count
  - Infinite untap of creatures you control[END OF COMBO RESULT][END OF COMBO]

Other prerequisites:
  - Nardole, Resourceful Cyborg must be on the battlefield
  - Chakram Retriever must be on the battlefield
  - Clockspinning must be in your hand
  - Nardole has at least four counters on it.
  - Nardole does not have summoning sickness.
[END OF COMBO PREREQUISITES]
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