Arid Archway + PuPu UFO + Retreat to Coralhelm

U identity

Commander legal

The 3 combo pieces

How to execute it

  1. Activate PuPu UFO by tapping it, putting Arid Archway from your hand onto the battlefield.
  2. When Arid Archway enters the battlefield, it and Retreat to Coralhelm trigger.
  3. Resolve the Arid Archway trigger, returning itself from the battlefield to your hand.
  4. Resolve the Retreat to Coralhelm trigger, untapping PuPu UFO.
  5. Repeat.

What the combo produces