Falco Spara, Pactweaver + Sensei's Divining Top + Semblance Anvil + Kappa Cannoneer

Falco Spara, Pactweaver

Sensei's Divining Top

Semblance Anvil

Kappa Cannoneer

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

This crafty loop turns your library's top card into a revolving door for Sensei's Divining Top, which you draw and recast repeatedly for zero mana thanks to Semblance Anvil making artifacts free to cast. Falco Spara, Pactweaver enables this engine by letting you cast the Top straight from the top of your library while paying its cost with counters from your own creatures, such as the +1/+1 counters generated by Kappa Cannoneer whenever the Top re-enters the battlefield. Every single iteration triggers the Cannoneer over and over again, simultaneously churning through your deck and pumping your board to unstoppable proportions.