How can you create a combo with Primal Prayers, Aetherstorm Roc, Shrieking Drake?
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[START OF COMBO]This combo can be formed with Primal Prayers, Aetherstorm Roc, Shrieking Drake

Color identity: GWU
Mana cost: 
Steps:
  1. Cast Shrieking Drake by paying {E} due to Primal Prayers, if able, or by paying its mana cost.
  2. When Shrieking Drake enters the battlefield, it and Aetherstorm Roc trigger.
  3. Resolve the Aetherstorm Roc trigger, causing you to get {E}.
  4. Resolve the Shrieking Drake trigger, returning it from the battlefield to your hand.
  5. Repeat.[END OF COMBO STEPS]

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

Other prerequisites:
  - Primal Prayers must be on the battlefield
  - Aetherstorm Roc must be on the battlefield
  - Shrieking Drake must be in your hand
  - You have at least {E} or enough mana to cast Shrieking Drake
[END OF COMBO PREREQUISITES]
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