Dour Port-Mage + Capture of Jingzhou + Mnemonic Wall

Dour Port-Mage

Capture of Jingzhou

Mnemonic Wall

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 Mnemonic Wall by paying its mana cost.
3. When Mnemonic Wall 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 Mnemonic Wall from the battlefield to your hand.
6. Dour Port-Mage triggers, causing you to draw a card.
7. Repeat.

This elegant loop achieves infinite turns by recycling Capture of Jingzhou with the recursive power of Mnemonic Wall every time it enters the battlefield. To reset this loop and keep your hand full, Dour Port-Mage serves double duty: its activated ability bounces the Wall back to your hand for replay, while its static triggered ability rewards you with a card draw every single time the Wall leaves the battlefield without dying.