Sensei's Divining Top + Stone Calendar + Fateful Discovery

Sensei's Divining Top

Stone Calendar

Fateful Discovery

How it works

1. Cast Sensei's Divining Top by paying 0 due to Stone Calendar.
2. When Sensei's Divining Top enters, Fateful Discovery triggers.
3. Holding priority, activate Sensei's Divining Top by tapping it, causing you to draw a card and put Sensei's Divining Top on top of your library.
4. Resolve the Fateful Discovery trigger, causing you to draw Sensei's Divining Top from your library
5. Repeat

This clever loop relies on Stone Calendar to drop the casting cost of Sensei's Divining Top down to zero, turning the artifact into a completely free spell every time you cast it. As the Top enters the battlefield, Fateful Discovery triggers to reward you with a drawn card, but you can tap Sensei's Divining Top in response to draw *another* card and tuck the Top safely back onto the top of your library. When the Fateful Discovery trigger subsequently resolves, you draw Sensei's Divining Top right back into your hand, ready to be cast again for free. By looping these actions, you generate infinite card draw, infinite draw triggers, and a near-infinite storm count.