Teferi, Master of Time, Deepglow Skate, and Venser, the Sojourner

Prerequisites

• Teferi, Master of Time on the battlefield
• Deepglow Skate on the battlefield
• Venser, the Sojourner on the battlefield
• Teferi has at least six loyalty counters on it

Steps

1. Activate Venser's first loyalty ability by putting two loyalty counters on it, exiling Deepglow Skate until your end step
2. At the beginning of your end step, Venser triggers, returning Deepglow Skate to the battlefield from exile
3. When Deepglow Skate enters the battlefield, it triggers, doubling the number of 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 Teferi's first loyalty ability by putting a loyalty counter on it, causing you to loot
7. Repeat steps 1 through 3 one additional time
8. Move to your second extra turn
9. Repeat

Results

• Infinite turns