Jin-Gitaxias, Progress Tyrant, Venser, Shaper Savant, Naban, Dean of Iteration, and Walk the Aeons

Prerequisites

• Jin-Gitaxias, Progress Tyrant on the battlefield
• Venser, Shaper Savant in hand
• Naban, Dean of Iteration on the battlefield
• Walk the Aeons in hand
• You haven't copied a spell using Jin-Gitaxias this turn
• each turn available

Steps

1. Cast Walk the Aeons by paying
2. Jin-Gitaxias triggers, copying Walk the Aeons
3. Holding priority, cast Venser by paying
4. When Venser enters the battlefield, it triggers twice, returning itself and the original Walk the Aeons to your hand from the battlefield and stack respectively
5. Resolve the copy of Walk the Aeons, causing you to take an extra turn after this one
6. Repeat each turn

Results

• Infinite turns