Requires

Dour Port-Mage must be on the battlefield. Time Warp must be in hand. Greenwarden of Murasa must be in hand. available plus enough mana to cast Time Warp and Greenwarden of Murasa each turn.

Steps

1. Cast Time Warp 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 Warp 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