Yarok, the Desecrated, Master Transmuter, Corridor Monitor, and Chromatic Orrery

Prerequisites

• Yarok, the Desecrated on the battlefield
• Master Transmuter on the battlefield
• Corridor Monitor on the battlefield
• Chromatic Orrery on the battlefield
• Master Transmuter does not have summoning sickness

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 its ability twice
4. Resolve the first Corridor Monitor trigger, untapping Master Transmuter
5. Activate Master Transmuter by paying , tapping it and returning Chromatic Orrery to your hand, putting Chromatic Orrery from your hand onto the battlefield
6. Resolve the remaining Corridor Monitor trigger from step 3, untapping Master Transmuter
7. Repeat

Results

• Infinite blinking of artifacts you control
• Infinite card draw
• Infinite colored mana
• Infinite colorless mana
• Infinite draw triggers
• Infinite ETB
• Infinite LTB