Sensei's Divining Top + Rook Turret + Armor Wars

Sensei's Divining Top

Rook Turret

Armor Wars

How it works

1. Cast Sensei's Divining Top by paying 0 due to Armor Wars.
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 transforms your library into an endless card-filtering engine by leaning on chapter II of Armor Wars, which reduces the cost of artifact spells by {1} to make Sensei's Divining Top free to cast. As the Top enters, Rook Turret triggers to reward you with a draw-and-discard effect whenever another artifact arrives. By activating the Top in response to that trigger—drawing a card and placing the artifact back on top of your library—the turret resolves by pulling the Top right back out of your deck before you discard a spare card, letting you repeat the cycle indefinitely.