Sensei's Divining Top + Enthusiastic Mechanaut + Rook Turret

Sensei's Divining Top

Enthusiastic Mechanaut

Rook Turret

How it works

1. Cast Sensei's Divining Top by paying 0 due to Enthusiastic Mechanaut.
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 delightful little loop transforms Sensei's Divining Top into a self-sustaining engine by leaning entirely on cost reduction and triggered abilities. Enthusiastic Mechanaut drops the casting cost of the Top to zero, allowing you to deploy it repeatedly for free. Meanwhile, Rook Turret watches your artifacts arrive and rewards each entrance with a loot effect; by tapping Sensei's Divining Top in response to its own entry trigger to draw a card and rest on top of your library, the Rook Turret trigger cleanly plucks the Top back into your hand while letting you cycle away unwanted cards.