Falco Spara, Pactweaver + Sensei's Divining Top + Enthusiastic Mechanaut + Oneirophage

Falco Spara, Pactweaver

Sensei's Divining Top

Enthusiastic Mechanaut

Oneirophage

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. Oneirophage 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 loop turns the trusty Sensei's Divining Top into an endless engine by leveraging the top-deck casting permission granted by Falco Spara, Pactweaver. Normally, recasting the Top would cost its full mana value, but Enthusiastic Mechanaut steps in to reduce that cost to zero, allowing you to bypass mana constraints entirely. Instead of paying mana, Falco Spara, Pactweaver allows you to pay for the spell simply by removing a counter from a creature you control—a cost easily fueled by the steady accumulation of +1/+1 counters that Oneirophage receives each time you draw a card from the Top's ability.