Falco Spara, Pactweaver + Sensei's Divining Top + Helm of Awakening + Arcbound Crusher

Falco Spara, Pactweaver

Sensei's Divining Top

Helm of Awakening

Arcbound Crusher

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, Arcbound Crusher triggers, putting a +1/+1 counter on Arcbound Crusher.
4. Repeat.

This clever loop turns Sensei's Divining Top into a self-sustaining engine by tapping it to draw a card and place itself on top of your library, where Falco Spara, Pactweaver allows you to recast it from the top. Thanks to Helm of Awakening reducing the casting cost to zero, you can pay that price simply by removing a counter from a creature you control, keeping your mana completely free. Meanwhile, Arcbound Crusher happily exploits this constant motion by accumulating a fresh +1/+1 counter every single time Sensei's Divining Top enters the battlefield anew.