Compost + Painter's Servant + Niv-Mizzet, the Firemind + The Master of Lake-town

Compost

Painter's Servant

Niv-Mizzet, the Firemind

The Master of Lake-town

How it works

1. Draw a card.
2. Niv-Mizzet triggers, dealing 1 damage to target opponent.
3. The Master of Lake-town triggers, causing that player to mill a card.
4. Since the card will be black due to Painter's Servant, Compost triggers, causing you to draw a card.
5. Repeat from step 2.
6. Draw a card.
7. Niv-Mizzet triggers, dealing 1 damage to target opponent.
8. The Master of Lake-town triggers, causing that player to mill a card.
9. Since the card is black due to Painter's Servant, Compost triggers, allowing you to draw a card.
10. Repeat from step 2 until your library is empty or you decline to draw a card.