Requires

Double Vision must be on the battlefield. Venser, Shaper Savant must be in hand. Naban, Dean of Iteration must be on the battlefield. Nexus of Fate must be in hand. You have not cast any instant or sorcery spell this turn. Mana needed:

Steps

1. Cast Nexus of Fate by paying .
2. Double Vision triggers, creating a copy of Nexus of Fate.
3. Holding priority, cast Venser by paying .
4. Venser enters the battlefield, returning itself and original Nexus of Fate to your hand.
5. Resolve the Nexus of Fate copy, causing you to take an extra turn after this one.
6. Move to your extra turn.
7. Repeat.

Results