Teleportation Circle, Eternal Witness, and Walk the Aeons

Prerequisites

• Teleportation Circle on the battlefield
• Eternal Witness on the battlefield
• Walk the Aeons in hand
• each turn available

Steps

1. Cast Walk the Aeons 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 Walk the Aeons to your hand from your graveyard
4. Repeat each turn

Results

• Infinite turns