Chthonian Nightmare + Skullwinder + Capture of Jingzhou

Chthonian Nightmare

Skullwinder

Capture of Jingzhou

How it works

1. Cast Capture of Jingzhou by paying 3, causing you to take an extra turn after this one.
2. Move to your next turn.
3. Cast Chthonian Nightmare by paying 1.
4. When Chthonian Nightmare enters the battlefield, it triggers, causing you to get EEE.
5. Activate Chthonian Nightmare by paying EEE, sacrificing a creature with mana value 3 or less, and returning Chthonian Nightmare from the battlefield to your hand, returning Skullwinder from your graveyard to the battlefield.
6. When Skullwinder enters the battlefield, it triggers, returning Capture of Jingzhou from your graveyard to your hand.
7. Cast Chthonian Nightmare by paying 1.
8. When Chthonian Nightmare enters the battlefield, it triggers, causing you to get EEE.
9. Activate Chthonian Nightmare by paying at most EEE, sacrificing Skullwinder, and returning Chthonian Nightmare from the battlefield to your hand, returning a creature with mana value 3 or less from your graveyard to the battlefield.
10. Repeat.

This recursive loop achieves infinite turns by recycling Capture of Jingzhou alongside a clever loop of death and rebirth. When you cast Chthonian Nightmare, its entry provides the energy needed to sacrifice Skullwinder and pull it right back out of the graveyard along with another creature of mana value 3 or less. Because Skullwinder’s enters-the-battlefield ability brings Capture of Jingzhou back to your hand every single time the cycle repeats, you can continually cast the extra turn spell and secure total victory.