Sensei's Divining Top + Ugin, the Ineffable + Madame Web, Clairvoyant

Sensei's Divining Top

Ugin, the Ineffable

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 transforms Sensei's Divining Top into a free, self-replacing spell by leveraging cost reduction and topdeck casting access. Ugin, the Ineffable provides the crucial static discount that slashes the artifact's mana cost down to zero, while Madame Web, Clairvoyant grants you the ability to cast it directly from the top of your library. Simply tap Sensei's Divining Top to draw a card and place it back on your library, then recast it for free to repeat the process, generating infinite draw triggers and an arbitrarily large storm count.