Gateway Plaza + Retreat to Coralhelm + Scaretiller + Urza, Lord High Artificer

U identity

Commander legal

The 4 combo pieces

How to execute it

  1. Activate Urza by tapping Scaretiller, adding {U}.
  2. Scaretiller triggers, returning Gateway Plaza from your graveyard to the battlefield tapped.
  3. Gateway Plaza enters the battlefield, triggering itself and Retreat to Coralhelm.
  4. Resolve the Gateway Plaza trigger, choosing to sacrifice it.
  5. Resolve the Retreat to Coralhelm trigger, untapping Scaretiller.
  6. Repeat.

What the combo produces