Sensei's Divining Top + Cloud Key + Future Sight

Sensei's Divining Top

Cloud Key

Future Sight

How it works

1. 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.
2. Cast Sensei's Divining Top from the top of your library by paying 0.
3. Repeat

By pairing Future Sight to let you play cards directly off the top of your library and Cloud Key naming "artifact" to eliminate the casting cost entirely, Sensei's Divining Top becomes a self-sustaining engine. You simply tap the Top to draw a card and place it back on your library, then immediately cast it again for free from the top of your deck, creating an effortless loop that generates infinite draw triggers and an unbounded storm count.