Dour Port-Mage + Capture of Jingzhou + Ardent Elementalist

Dour Port-Mage

Capture of Jingzhou

Ardent Elementalist

How it works

1. Cast Capture of Jingzhou by paying its mana cost, causing you to take an extra turn after this one.
2. Cast Ardent Elementalist by paying its mana cost.
3. When Ardent Elementalist enters the battlefield, it triggers, returning Capture of Jingzhou from your graveyard to your hand.
4. Move to your next turn.
5. Activate Dour Port-Mage by paying 1 and tapping it, returning Ardent Elementalist from the battlefield to your hand.
6. Dour Port-Mage triggers, causing you to draw a card.
7. Repeat.

This clever loop achieves infinite turns by recycling Capture of Jingzhou with the enters-the-battlefield ability of Ardent Elementalist, which continuously plucks the extra-turn sorcery right back out of your graveyard. To keep the engine running, Dour Port-Mage steps in with its activated ability to bounce the Ardent Elementalist back to your hand for re-casting, all while capitalizing on Dour Port-Mage's triggered ability to reward you with a card draw every single time the wizard leaves the battlefield.