How can you create a combo with Retraction Helix, Midnight Guard, Ornithopter?
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[START OF COMBO]This combo can be formed with Retraction Helix, Midnight Guard, Ornithopter

Color identity: WU
Mana cost: {U}
Steps:
  1. Cast Retraction Helix targeting Midnight Guard.
  2. Tap Midnight Guard, returning Ornithopter to your hand.
  3. Recast Ornithopter.
  4. On ETB, Midnight Guard triggers, untapping itself.[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:
  - Retraction Helix must be in your hand
  - Midnight Guard must be on the battlefield
  - Ornithopter must be on the battlefield
[END OF COMBO PREREQUISITES]
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