Teferi, Master of Time, Ajani Steadfast, Ajani, the Greathearted, and Doubling Season

Prerequisites

• Teferi, Master of Time on the battlefield
• Ajani Steadfast on the battlefield
• Ajani, the Greathearted on the battlefield
• Doubling Season on the battlefield
• Teferi has at least seven loyalty counters on it
• Ajani Steadfast has at least three loyalty counters on it

Steps

1. Activate Ajani Steadfast's second loyalty ability by removing two loyalty counters from it, putting two +1/+1 counters on each creature you control, and two loyalty counters on each other planeswalker you control
2. Activate Ajani, the Greathearted's second loyalty ability by removing two loyalty counters from it, putting two +1/+1 counters on each creature you control, and two loyalty counters on each other planeswalker you control
3. Activate Teferi's third loyalty ability by removing ten loyalty counters from it, causing you to take two extra turns after this one
4. Move to your next turn
5. Activate Ajani Steadfast's second loyalty ability by removing two loyalty counters from it, putting two +1/+1 counters on each creature you control, and two loyalty counters on each other planeswalker you control
6. Activate Ajani, the Greathearted's second loyalty ability by removing two loyalty counters from it, putting two +1/+1 counters on each creature you control, and two loyalty counters on each other planeswalker you control
7. Activate Teferi's first loyalty ability by putting two loyalty counters on it, causing you to loot
8. Move to your next turn
9. Repeat

Results

• Infinite turns