Sensei's Divining Top + Temur Battlecrier + Fateful Discovery

Sensei's Divining Top

Temur Battlecrier

Fateful Discovery

How it works

1. Cast Sensei's Divining Top by paying 0 due to Temur Battlecrier.
2. When Sensei's Divining Top enters, Fateful Discovery triggers.
3. Holding priority, 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.
4. Resolve the Fateful Discovery trigger, causing you to draw Sensei's Divining Top from your library.
5. Repeat

This ingenious loop centers around Sensei's Divining Top, utilizing a clever stack trick to turn a single artifact into an endless engine. With Temur Battlecrier slashing the artifact's mana cost down to zero, casting it becomes completely free. As the Top enters, Fateful Discovery triggers to reward you with card draw; however, by tapping Sensei's Divining Top in response to its own entry, you draw a card *and* place the Top right back on top of your library just in time to draw it again with the resolving Fateful Discovery trigger.