Sensei's Divining Top + Echoes of Eternity + Umori, the Collector

Sensei's Divining Top

Echoes of Eternity

Umori, the Collector

How it works

1. Cast Sensei's Divining Top by paying 0.
2. Echoes of Eternity triggers, creating a copying the Sensei's Divining Top spell.
3. Resolve both Sensei's Divining Top spells.
4. Activate the nontoken Sensei's Divining Top by tapping it, causing you to draw a card and put Sensei's Divining Top from the battlefield onto the top of your library.
5. Activate the token Sensei's Divining Top by tapping it, causing you to draw Sensei's Divining Top, and causing you to put the token Sensei's Divining Top from the battlefield onto the top of your library.
6. Repeat.

This clever setup relies on reducing costs so that Sensei's Divining Top can be cast for free, which Umori, the Collector achieves effortlessly when set to artifacts. Once you cast it, Echoes of Eternity steps in to double your spellcasting, creating a token copy of Sensei's Divining Top right alongside the original. Because both versions can be tapped to draw a card and tuck themselves away, you can continuously tap one to draw while the other replaces itself on top of your library, creating an endless loop of card draw.