Falco Spara, Pactweaver + Sensei's Divining Top + Birgi, God of Storytelling // Harnfel, Horn of Bounty + Stark's Ingenuity

Falco Spara, Pactweaver

Sensei's Divining Top

Birgi, God of Storytelling // Harnfel, Horn of Bounty

Stark's Ingenuity

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. Stark's Ingenuity triggers, putting a +1/+1 counter on the creature it's attached to
3. Cast Sensei's Divining Top from the top of your library by paying 1 and removing a counter from a creature you control.
4. Birgi triggers, adding
5. Repeat.

This loop turns your library into a self-sustaining engine by letting Sensei's Divining Top repeatedly draw itself and glide back to the top of your deck. Falco Spara, Pactweaver is the linchpin that allows you to cast that Top directly from the library by using its counters as an alternate cost. Meanwhile, Stark's Ingenuity continuously restocks those spent counters by rewarding every card draw with a fresh +1/+1 counter on the enchanted creature. Finally, Birgi, God of Storytelling fuels the entire mana requirement by generating red mana each time a spell is cast, letting you pay for the Top's activation and re-cast costs indefinitely.