Dour Port-Mage + Returned Pastcaller + Temporal Manipulation

Dour Port-Mage

Returned Pastcaller

Temporal Manipulation

How it works

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