Falco Spara, Pactweaver + Sensei's Divining Top + Chasm Skulker + Lyse Hext

Falco Spara, Pactweaver

Sensei's Divining Top

Chasm Skulker

Lyse Hext

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. Lyse's prowess ability triggers, giving it +1/+1 until end of turn.
5. Repeat.

This engine turns Sensei's Divining Top into a free, self-replacing spell by leveraging Falco Spara, Pactweaver's ability to cast from the top of your library using counters as an alternative cost. Every time you cast the Top, Chasm Skulker grows larger thanks to its draw trigger, while Lyse Hext reduces the casting cost to zero and triggers prowess to pump itself up. The shield counter on Falco Spara, Pactweaver can even prime the loop before Chasm Skulker's accumulated counters take over to sustain the continuous casting.