How can you create a combo with Peregrine Drake, Shrieking Drake, Panharmonicon?
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[START OF COMBO]This combo can be formed with Peregrine Drake, Shrieking Drake, Panharmonicon

Color identity: U
Mana cost: {4}{U}
Steps:
  1. Cast Peregrine Drake by paying {4}{U}.
  2. When Peregrine Drake enters the battlefield, it triggers itself twice due to Panharmonicon.
  3. Resolve one Peregrine Drake trigger, untapping five lands.
  4. Activate those lands by tapping them to add at least {2}{U}.
  5. Resolve the remaining Peregrine Drake trigger, untapping five lands.
  6. Activate those lands by tapping them to add at least {2}{U}.
  7. Cast Shrieking Drake by paying {U}.
  8. When Shrieking Drake enters the battlefield, it triggers itself twice due to Panharmonicon, returning itself and Peregrine Drake from the battlefield to your hand.
  9. Repeat.
  10. If you can produce at least one additional mana in step 4, this combo produces infinite mana.[END OF COMBO STEPS]

Result:
  - Infinite enters the battlefield
  - Infinite leaves the battlefield
  - Infinite mana lands you control can produce
  - Infinite storm count[END OF COMBO RESULT][END OF COMBO]

Other prerequisites:
  - Peregrine Drake must be in your hand
  - Shrieking Drake must be in your hand
  - Panharmonicon must be on the battlefield
  - You control lands that can produce at least {2}{U}.
[END OF COMBO PREREQUISITES]
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