Sensei's Divining Top + Traxos, Scourge of Kroog + Magus of the Future + Enduring Vitality

Sensei's Divining Top

Traxos, Scourge of Kroog

Magus of the Future

Enduring Vitality

How it works

1. Activate Traxos by tapping it, adding 1.
2. 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.
3. Cast Sensei's Divining Top from the top of your library by paying 1.
4. Traxos triggers, untapping itself.
5. Repeat.

This loop relies on a clever self-sustaining engine built right off the top of your library. With Magus of the Future revealing the top card, you can repeatedly cast Sensei's Divining Top from your library, tap it to draw a card (which places the Top right back on top), and recast it. Enduring Vitality is the key mana engine here, granting creatures the ability to tap for any color of mana; this lets you tap Traxos, Scourge of Kroog to pay for the Top's casting cost. Every time you cast the historic artifact, Traxos triggers and untaps itself, ready to tap again for mana and feed the loop infinitely.