Master Transmuter, Corridor Monitor, Molten Echoes, and Chromatic Orrery

Prerequisites

• Master Transmuter on the battlefield
• Corridor Monitor on the battlefield
• Molten Echoes on the battlefield
• Chromatic Orrery on the battlefield
• Master Transmuter does not have summoning sickness
• "Construct" chosen with Molten Echoes

Steps

1. Activate Chromatic Orrery's first ability by tapping it, adding
2. Activate Master Transmuter by paying , 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 , 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

Results

• Infinite blinking of artifacts you control
• Infinite card draw
• Infinite colored mana
• Infinite colorless mana
• Infinite creature tokens with haste
• Infinite draw triggers
• Infinite ETB
• Infinite LTB