Dour Port-Mage, Capture of Jingzhou, and Mnemonic Wall

Prerequisites

• Dour Port-Mage on the battlefield
• Capture of Jingzhou in hand
• Mnemonic Wall in hand
• available plus enough mana to cast Capture of Jingzhou and Mnemonic Wall each turn

Steps

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 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

Results

• Infinite turns