Sensei's Divining Top + Foundry Inspector + The Lunar Whale

Sensei's Divining Top

Foundry Inspector

The Lunar Whale

How it works

1. Activate Sensei's Divining Top by tapping it, causing you to draw a card and put Sensei's Divining Top on top of your library.
2. Cast Sensei's Divining Top from the top of your library by paying 0.
3. Repeat

This brilliant engine achieves infinite card draw by turning Sensei's Divining Top into a free, self-replacing loop. Foundry Inspector reduces the artifact's cost down to zero, while The Lunar Whale provides the crucial top-deck permission you need to cast Sensei's Divining Top right back off your library the moment it replaces itself there. By repeatedly drawing, casting, and replacing the artifact, you generate a massive storm count and cycle through your entire deck at zero net mana.