Yomiji, Who Bars the Way + Morophon, the Boundless + The First Sliver + Bartolomé del Presidio

Yomiji, Who Bars the Way

Morophon, the Boundless

The First Sliver

Bartolomé del Presidio

How it works

1. Activate Bartolomé del Presidio by sacrificing The First Sliver.
2. Yomiji triggers, returning The First Sliver from your graveyard to your hand.
3. Resolve the Bartolomé del Presidio trigger.
4. Cast The First Sliver by paying 0.
5. The First Sliver's cascade ability triggers, allowing you to cascade.
6. The First Sliver enters the battlefield.
7. Repeat.

This loop transforms your command zone or hand into an engine of endless iteration by using Morophon, the Boundless—with its chosen type set to Slivers—to completely eliminate the mana cost of The First Sliver. Once you cast The First Sliver for free, its cascade ability triggers alongside its inherent Sliver type, while Yomiji, Who Bars the Way ensures that whenever you sacrifice it to Bartolomé del Presidio, the legendary Sliver returns safely to your hand rather than staying in the graveyard. Because Bartolomé del Presidio feeds on this sacrifice to grow larger while Yomiji, Who Bars the Way recycles the commander indefinitely, you can recast The First Sliver over and over to churn through your entire library, stack infinite death triggers, and amass an arbitrarily large storm count.