How can you create a combo with Derevi, Empyrial Tactician, Aether Vial, Cloudstone Curio, Pestermite?
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[START OF COMBO]This combo can be formed with Derevi, Empyrial Tactician, Aether Vial, Cloudstone Curio, Pestermite

Color identity: GWU
Mana cost: 
Steps:
  1. Activate Aether Vial by tapping it, putting Pestermite onto the battlefield from your hand.
  2. When Pestermite enters the battlefield, it and Cloudstone Curio trigger.
  3. Resolve the Pestermite trigger, untapping Aether Vial.
  4. Resolve the Cloudstone Curio trigger, returning Derevi from the battlefield to your hand.
  5. Activate Aether Vial by tapping it, putting Derevi onto the battlefield from your hand.
  6. When Derevi enters the battlefield, it and Cloudstone Curio trigger.
  7. Resolve the Derevi trigger, untapping Aether Vial.
  8. Resolve the Cloudstone Curio trigger, returning Pestermite from the battlefield to your hand.
  9. Repeat.[END OF COMBO STEPS]

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

Other prerequisites:
  - Derevi, Empyrial Tactician must be on the battlefield
  - Aether Vial must be on the battlefield
  - Cloudstone Curio must be on the battlefield
  - Pestermite must be in your hand
  - Aether Vial has exactly three charge counters on it.
[END OF COMBO PREREQUISITES]
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