How can you create a combo with Mirran Spy, Banishing Knack, Ornithopter?
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[START OF COMBO]This combo can be formed with Mirran Spy, Banishing Knack, Ornithopter

Color identity: U
Mana cost: {U}
Steps:
  1. Cast Banishing Knack by paying {U}, targeting Mirran Spy.
  2. Activate Mirran Spy by tapping it, returning Ornithopter from the battlefield to your hand.
  3. Cast Ornithopter by paying {0}.
  4. Mirran Spy triggers, untapping itself.
  5. Repeat from step 2.[END OF COMBO STEPS]

Result:
  - Infinite enters the battlefield
  - Infinite leaves the battlefield
  - Infinite storm count[END OF COMBO RESULT][END OF COMBO]

Other prerequisites:
  - Mirran Spy must be on the battlefield
  - Banishing Knack must be in your hand
  - Ornithopter must be on the battlefield
[END OF COMBO PREREQUISITES]
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