How can you create a combo with Patron of the Moon, Tiller Engine, Arid Archway?
user
[START OF COMBO]This combo can be formed with Patron of the Moon, Tiller Engine, Arid Archway

Color identity: U
Mana cost: {1}
Steps:
  1. Activate Patron of the Moon by paying {1}, putting Arid Archway from your hand onto the battlefield.
  2. When Arid Archway enters the battlefield, it and Tiller Engine trigger.
  3. Resolve the Tiller Engine trigger, untapping Arid Archway.
  4. Activate Arid Archway by tapping it, adding {C}{C}.
  5. Resolve the Arid Archway trigger from step 2, returning it from the battlefield to your hand.
  6. Repeat.[END OF COMBO STEPS]

Result:
  - Infinite colorless mana
  - Infinite landfall triggers[END OF COMBO RESULT][END OF COMBO]

Other prerequisites:
  - Patron of the Moon must be on the battlefield
  - Tiller Engine must be on the battlefield
  - Arid Archway must be in your hand
[END OF COMBO PREREQUISITES]
assistant