Falco Spara, Pactweaver + Sensei's Divining Top + Etherium Sculptor + Chasm Skulker

Falco Spara, Pactweaver

Sensei's Divining Top

Etherium Sculptor

Chasm Skulker

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. Chasm Skulker 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 your library into a self-sustaining engine by letting you repeatedly cast Sensei's Divining Top right off the top of your deck. Etherium Sculptor is the linchpin that discounts the Top's mana cost down to zero, while Falco Spara, Pactweaver provides the alternate payment by stripping counters off your creatures instead of spending mana. Every time you draw the Top, Chasm Skulker happily grows with a new +1/+1 counter from the draw trigger, letting you pile up massive quantities of draws and artifact triggers.