Teferi, Master of Time, The Eternal Wanderer, and Deepglow Skate

Prerequisites

• Teferi, Master of Time on the battlefield
• The Eternal Wanderer on the battlefield
• Deepglow Skate on the battlefield
• Teferi has at least six loyalty counters on it

Steps

1. Activate The Eternal Wanderer's first loyalty ability by putting a loyalty counter on it, exiling Deepglow Skate until your end step
2. At the beginning of your end step, The Eternal Wanderer triggers, returning Deepglow Skate from exile to the battlefield
3. When Deepglow Skate enters the battlefield, it triggers, doubling the counters on Teferi
4. Activate Teferi's third loyalty ability by removing ten loyalty counters from it, causing you to take two extra turns after this one
5. Move to your first extra turn
6. Activate The Eternal Wanderer's first loyalty ability by putting a loyalty counter on it, exiling Deepglow Skate until your end step
7. Activate Teferi's first loyalty ability by putting a loyalty counter on it, causing you to loot
8. At the beginning of your end step, The Eternal Wanderer triggers, returning Deepglow Skate from exile to the battlefield
9. When Deepglow Skate enters the battlefield, it triggers, doubling the counters on Teferi
10. Move to your second extra turn
11. Repeat

Results

• Infinite turns