Falco Spara, Pactweaver + Sensei's Divining Top + Urza, Lord Protector + Clinquant Skymage

Falco Spara, Pactweaver

Sensei's Divining Top

Urza, Lord Protector

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 loop transforms the top of your library into an endless engine by using Falco Spara, Pactweaver to cast spells from it at the cost of a counter. With Urza, Lord Protector reducing the cost of Sensei's Divining Top to zero, you can repeatedly tap the Top to draw it, letting Clinquant Skymage grow while fueling Falco's alternate casting cost. Each iteration resets Sensei's Divining Top right back to the top of your library to draw again, generating an endless cascade of triggers and artifact enters-the-battlefield events.