Falco Spara, Pactweaver + Sensei's Divining Top + Umori, the Collector + Jace's Projection

Falco Spara, Pactweaver

Sensei's Divining Top

Umori, the Collector

Jace's Projection

How it works

1. 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.
2. Jace's Projection triggers, putting a +1/+1 counter on it.
3. Cast Sensei's Divining Top from the top of your library by paying 0 and removing a counter from a creature you control.
4. Repeat.

This clever engine turns Sensei's Divining Top into a self-sustaining loop by leveraging Falco Spara, Pactweaver's ability to cast spells from the top of your library using creature counters as payment instead of mana. Because Sensei's Divining Top replaces its own draw by returning directly to the top of your library, you can continuously tap it to draw a card and then immediately recast it for free. Each iteration of this loop is subsidized by Umori, the Collector's cost reduction on artifacts and fueled by the steady stream of counters generated when Jace's Projection triggers off every single card you draw, giving you an endless cycle of artifact entry and card draw.