Falco Spara, Pactweaver + Sensei's Divining Top + Toothy, Imaginary Friend + Enthusiastic Mechanaut

Falco Spara, Pactweaver

Sensei's Divining Top

Toothy, Imaginary Friend

Enthusiastic Mechanaut

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. Toothy 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 ingenious loop relies on Falco Spara, Pactweaver to let you cast Sensei's Divining Top directly off the top of your library without paying its mana cost, substituting a counter removal instead. Enthusiastic Mechanaut makes this possible by reducing the artifact's casting cost to zero, allowing you to continually tap it to draw a card and put it back onto your library. Meanwhile, Toothy, Imaginary Friend sits on the battlefield turning every single card draw into a growing tower of +1/+1 counters that fuel Falco Spara, Pactweaver's alternate cost ability, setting up a continuous cycle of drawing your deck and triggering endless artifact entries.