Sensei's Divining Top + Urza, Lord Protector + Madame Web, Clairvoyant

Sensei's Divining Top

Urza, Lord Protector

Madame Web, Clairvoyant

How it works

1. 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.
2. Cast Sensei's Divining Top from the top of your library by paying 0.
3. Repeat

This clever loop relies on the passive cost-reduction of Urza, Lord Protector to make your artifacts completely free to cast. With Madame Web, Clairvoyant granting you permission to cast noncreature spells directly from the top of your library, you can continuously tap Sensei's Divining Top to draw a card while placing itself back on top of your deck. Because Urza discounts its mana value from {1} down to {0}, you can immediately replay Sensei's Divining Top from the top of your library for free, generating endless draw triggers and a near-infinite storm count.