Falco Spara, Pactweaver + Sensei's Divining Top + Arcbound Crusher + Ballad of the Black Flag

Falco Spara, Pactweaver

Sensei's Divining Top

Arcbound Crusher

Ballad of the Black Flag

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 the top of your library into an endless engine by leveraging Falco Spara, Pactweaver's ability to cast spells from the library using creature counters as an alternative cost. Sensei's Divining Top fuels this by constantly replacing its own draw with a trip back to the top of your library, allowing you to recast it for free by stripping counters off your board. While this is happening, Arcbound Crusher happily grows into a colossal threat as it triggers off every single artifact entrance, keeping the cycle supplied with new counters via its modular nature—especially when supported by the historic cost-reductions and mill utility of Ballad of the Black Flag.