Requires

Jin-Gitaxias, Progress Tyrant must be on the battlefield. Venser, Shaper Savant must be in hand. Elesh Norn, Mother of Machines must be on the battlefield. Capture of Jingzhou must be in hand. You haven't copied a spell using Jin-Gitaxias this turn. Mana needed: each turn

Steps

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

Results