Dour Port-Mage, Time Walk, and Greenwarden of Murasa

Prerequisites

• Dour Port-Mage on the battlefield
• Time Walk in hand
• Greenwarden of Murasa in hand
• available plus enough mana to cast Time Walk and Greenwarden of Murasa each turn

Steps

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

Results

• Infinite turns