Double Vision + Venser, Shaper Savant + Naban, Dean of Iteration + Walk the Aeons

Prerequisites

• You haven't cast an instant or sorcery spell this turn.

Steps

1. 1Cast Walk the Aeons by paying .
2. 2Double Vision triggers, copying Walk the Aeons.
3. 3Holding priority, cast Venser by paying .
4. 4When 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. 5Resolve the copy of Walk the Aeons, causing you to take an extra turn after this one.
6. 6Repeat each turn.

Effects

• Infinite turns
• Lock