Sensei's Divining Top + Ugin, the Ineffable + Crystal Skull, Isu Spyglass

Sensei's Divining Top

Ugin, the Ineffable

Crystal Skull, Isu Spyglass

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 clever loop relies on Ugin, the Ineffable to reduce the cost of colorless spells by {2}, allowing Sensei's Divining Top to be recast for free whenever it returns to the top of your library. Meanwhile, Crystal Skull, Isu Spyglass plays a vital supporting role by granting permission to cast that very same historic artifact directly off the top of your library. By continuously tapping Sensei's Divining Top to draw a card and place itself back on top, you trigger an endless cycle of free casting that floods the board with infinite draw triggers and a near-infinite storm count.