Mana Echoes, Kiri-Onna, and Chromatic Orrery

Prerequisites

• Mana Echoes on the battlefield
• Kiri-Onna in hand
• Chromatic Orrery on the battlefield

Steps

1. Activate Chromatic Orrery's first ability by tapping it, adding
2. Cast Kiri-Onna by paying
3. When Kiri-Onna enters the battlefield, it and Mana Echoes trigger
4. Resolve the Mana Echoes trigger, adding at least
5. Resolve the Kiri-Onna trigger, returning it to your hand from the battlefield
6. Repeat from step 2
7. If you control five Spirits except Kiri-Onna, this combo will net infinite mana

Results

• Infinite colored mana
• Infinite colorless mana
• Infinite ETB
• Infinite LTB
• Infinite storm count