Dour Port-Mage, Time Warp, and Revolutionist

Prerequisites

• Dour Port-Mage on the battlefield
• Time Warp in hand
• Revolutionist in hand
• available plus enough mana to cast Time Warp and Revolutionist each turn

Steps

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

Results

• Infinite turns