Sensei's Divining Top + Traxos, Scourge of Kroog + Earthcraft + The Lunar Whale

Sensei's Divining Top

Traxos, Scourge of Kroog

Earthcraft

The Lunar Whale

How it works

1. Activate a basic land by tapping it, adding 1.
2. Activate Earthcraft by tapping Traxos, untapping a basic land.
3. Activate Sensei's Divining Top's second ability by tapping it, causing you to draw a card and put Sensei's Divining Top on top of your library.
4. Cast Sensei's Divining Top from the top of your library by paying 1.
5. Traxos triggers, untapping itself.
6. Repeat.

This engine turns the humble top of your library into an endless loop by leveraging Earthcraft to untap your lands using your creatures. Because Sensei's Divining Top can tap to draw itself and place itself right back on top of your library, you can recast it repeatedly for the exact mana generated by tapping and untapping your basic land. Meanwhile, The Lunar Whale lets you look at the top of your library at any time, which helps set up the initial execution, while Traxos, Scourge of Kroog plays the vital role of untapping itself whenever you cast Sensei's Divining Top—a historic spell—allowing the whole sequence to safely repeat without getting stuck tapped down.