Teleportation Circle, Eternal Witness, and Time Warp

Prerequisites

• Teleportation Circle on the battlefield
• Eternal Witness on the battlefield
• Time Warp in hand
• each turn available

Steps

1. Cast Time Warp by paying , causing you to take an extra turn after this one
2. At the beginning of your end step, Teleportation Circle triggers, blinking Eternal Witness
3. When Eternal Witness enters the battlefield, it triggers, returning Time Warp to your hand from your graveyard
4. Repeat each turn

Results

• Infinite turns