Chromatic Orrery + Corridor Monitor + Master Transmuter + Molten Echoes

UR identity

Commander legal

The 4 combo pieces

What must be in place

Master Transmuter does not have summoning sickness.
"Construct" chosen with Molten Echoes.

How to execute it

  1. Activate Chromatic Orrery's first ability by tapping it, adding {5}.
  2. Activate Master Transmuter by paying {1}, tapping it and returning Corridor Monitor to your hand, putting Corridor Monitor from your hand onto the battlefield.
  3. Corridor Monitor enters the battlefield, triggering itself and Molten Echoes.
  4. Resolve the Molten Echoes trigger, creating a token copy of Corridor Monitor with haste.
  5. The Corridor Monitor token enters the battlefield, untapping Master Transmuter.
  6. Activate Master Transmuter by paying {1}, tapping it and returning Chromatic Orrery to your hand, putting Chromatic Orrery from your hand onto the battlefield.
  7. Resolve the Corridor Monitor trigger from step 3, untapping Master Transmuter.
  8. Repeat.

What the combo produces