Falco Spara, Pactweaver + Sensei's Divining Top + Uthros Research Craft + The Immortal Sun

Falco Spara, Pactweaver

Sensei's Divining Top

Uthros Research Craft

The Immortal Sun

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 Diving Top from the top of your library by paying 0 and removing a charge counter from Uthros Research Craft.
3. Uthros Research Craft triggers, putting a charge counter on it and causing you to draw a card.
4. Repeat.

This brilliant loop turns the top of your library into an endless engine by leveraging Falco Spara, Pactweaver's ability to cast spells using counters instead of mana, allowing you to cast Sensei's Divining Top for free by feeding it charge counters. While Uthros Research Craft helps fuel this recycling process by triggering card draw and generating its own replacement counters whenever you cast an artifact spell, The Immortal Sun sweetens the entire operation by reducing the artifact's cost to zero and drawing you even more cards. By repeatedly drawing the Top and casting it right back from the library, you generate infinite card draw and a massive storm count.