Sensei's Divining Top + One with the Multiverse + Herald of Kozilek

Sensei's Divining Top

One with the Multiverse

Herald of Kozilek

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

This elegant little engine turns the top of your library into a self-sustaining loop by leveraging the cost-reduction power of Herald of Kozilek alongside One with the Multiverse, which grants you permission to cast Sensei's Divining Top directly from the library. Normally, recasting the Top would cost its standard mana value of {1}, but the Herald lowers that cost to {0}, allowing you to tap the artifact to draw a card and place it back on top of your library for free, ad infinitum. Because you can immediately recast it from the top of your library without spending any mana, you effortlessly generate infinite card draw, infinite draw triggers, and a near-infinite storm count.