Aminatou, the Fateshifter, Teferi, Master of Time, Nicol Bolas, Dragon-God, and Dovin, Grand Arbiter

Prerequisites

• Aminatou, the Fateshifter on the battlefield
• Teferi, Master of Time on the battlefield
• Nicol Bolas, Dragon-God on the battlefield
• Dovin, Grand Arbiter on the battlefield

Steps

1. Activate Nicol Bolas using Dovin's first loyalty ability by putting a loyalty counter on it
2. Deal combat damage to an opponent using at least three creatures, triggering Nicol Bolas that many times, putting that many loyalty counters on it
3. Activate Aminatou's first loyalty ability by putting a loyalty counter on it
4. During your next turn, activate Nicol Bolas using Teferi's third loyalty ability by removing ten loyalty counters from it, causing you to take two extra turns after this one
5. Activate Aminatou's second loyalty ability by removing a loyalty counter from it, blinking Nicol Bolas, causing it to re-enter the battlefield with four loyalty counters on it
6. Repeat steps 1 and 2 once
7. Repeat from step 1 during your next turn

Results

• Infinite turns