Falco Spara, Pactweaver + Sensei's Divining Top + Umori, the Collector + Clinquant Skymage

Falco Spara, Pactweaver

Sensei's Divining Top

Umori, the Collector

Clinquant Skymage

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. Clinquant Skymage 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 engine turns Sensei's Divining Top into a self-replacing powerhouse by leveraging Falco Spara, Pactweaver's ability to cast spells straight from the top of your library using creature counters as an alternative cost. Every time you tap the Top to draw a card, Clinquant Skymage readily feeds the loop by generating a fresh +1/+1 counter every time you draw, which Falco Spara can immediately remove to recast the Top for zero mana thanks to the helpful cost reduction from Umori, the Collector naming artifacts. You simply tap, draw, put the Top back, collect your trigger, and sacrifice the new counter to cast it right back from the top—generating endless draw triggers and artifact comings and goings without ever spending mana.