Dimir Aqueduct + PuPu UFO + Retreat to Coralhelm

UB identity

Commander legal

The 3 combo pieces

How to execute it

  1. Activate PuPu UFO by tapping it, putting Dimir Aqueduct from your hand onto the battlefield.
  2. When Dimir Aqueduct enters the battlefield, it and Retreat to Coralhelm trigger.
  3. Resolve the Dimir Aqueduct 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