Sensei's Divining Top + Longshot, Rebel Bowman + Rook Turret

Sensei's Divining Top

Longshot, Rebel Bowman

Rook Turret

How it works

1. Cast Sensei's Divining Top by paying 0 due to Longshot.
2. Longshot triggers, dealing 2 damage to each opponent.
3. When Sensei's Divining Top enters, Rook Turret triggers.
4. 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.
5. 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.
6. Repeat

This clever loop uses Longshot, Rebel Bowman to completely remove the mana cost of Sensei's Divining Top, turning the artifact into a free noncreature spell that continuously fuels your damage output against opponents. As the Top enters the battlefield, Rook Turret provides the essential card-filtering engine to snatch the Top right back off your library before you even have to resolve its standard draw ability. By tapping Sensei's Divining Top in response to the Turret's trigger, you draw a card and slide the Top safely back to the top of your library, where Rook Turret's triggered ability lets you draw it again while discarding a spare card.