Teleportation Circle + Eternal Witness + Walk the Aeons

Teleportation Circle

Eternal Witness

Walk the Aeons

How it works

1. Cast Walk the Aeons by paying 4, 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.