Sensei's Divining Top, Umori, the Collector, and Rook Turret

Prerequisites

• Sensei's Divining Top in hand
• Umori, the Collector on the battlefield
• Rook Turret on the battlefield

Steps

1. Cast Sensei's Divining Top by paying due to Umori
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

Results

• Infinite draw triggers
• Infinite looting
• Infinite self-discard triggers
• Near-infinite storm count