Double Vision, Venser, Shaper Savant, Naban, Dean of Iteration, and Temporal Manipulation

Prerequisites

• Double Vision on the battlefield
• Venser, Shaper Savant in hand
• Naban, Dean of Iteration on the battlefield
• Temporal Manipulation in hand
• You haven't cast an instant or sorcery spell this turn
• each turn available

Steps

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

Results

• Infinite turns