Falco Spara, Pactweaver + Sensei's Divining Top + Cloud Key + Chasm Skulker

Falco Spara, Pactweaver

Sensei's Divining Top

Cloud Key

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 clever loop transforms Sensei's Divining Top into a free, repeatable engine by leaning on Falco Spara, Pactweaver's ability to cast spells from the top of your library using any creature's counters as an alternate cost. Cloud Key smooths the math by reducing the Top's casting cost to zero, allowing you to continually tap the Top to draw a card, recast it from the top of your library by stripping a counter off a creature, and repeat the cycle endlessly. Every iteration of this process naturally feeds Chasm Skulker, rapidly growing its size with a mountain of +1/+1 counters and setting you up to flood the board with an immense army of Squid tokens the moment it leaves play.