Sensei's Divining Top + Helm of Awakening + Rook Turret

Sensei's Divining Top

Helm of Awakening

Rook Turret

How it works

1. Cast Sensei's Divining Top by paying 0 due to Helm of Awakening.
2. When Sensei's Divining Top enters, Rook Turret 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 Rook Turret trigger, causing you to draw Sensei's Divining Top from your library, and then discard a card other than Sensei's Divining Top.
5. Repeat

This clever loop relies on Helm of Awakening to reduce the cost of Sensei's Divining Top down to zero, allowing you to cast it repeatedly for free. Every time the Top re-enters the battlefield, Rook Turret’s triggered ability fires to reward your artifact's arrival with a card draw and subsequent discard. By tapping Sensei's Divining Top in response to that trigger, you draw a card and slide the Top right back onto your library just in time for the Rook Turret effect to draw it back into your hand, setting up an endless cycle of self-discard and near-infinite storm count.