Falco Spara, Pactweaver + Sensei's Divining Top + Foundry Inspector + Toothy, Imaginary Friend

Falco Spara, Pactweaver

Sensei's Divining Top

Foundry Inspector

Toothy, Imaginary Friend

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. Toothy 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 centers on Sensei's Divining Top, which replaces its own draw by resting safely on top of your library. Foundry Inspector makes this repositioned artifact completely free to recast, while Falco Spara, Pactweaver bypasses traditional mana costs entirely by letting you cast it straight from the top of your library using a simple counter removal. Finally, every single iteration of this cycle feeds Toothy, Imaginary Friend, turning your continuous top-decking into a rapidly growing pile of +1/+1 counters and an utterly massive card draw engine once Toothy eventually leaves the battlefield.