Yomiji, Who Bars the Way + Morophon, the Boundless + The First Sliver + Altar of Dementia

Prerequisites

• "Sliver" chosen with Morophon.

Steps

1. 1Activate Altar of Dementia by sacrificing The First Sliver, targeting any player.
2. 2Yomiji triggers, returning The First Sliver from your graveyard to your hand.
3. 3Resolve the Altar of Dementia trigger, causing the targeted player to mill eight cards.
4. 4Cast The First Sliver for .
5. 5Resolve the First Sliver's cascade ability.
6. 6The First Sliver enters the battlefield.
7. 7Repeat.

Effects

• Cast a subset of spells in your library
• Infinite creature ETB
• Infinite creature LTB
• Infinite creature sacrifice triggers
• Infinite death triggers
• Infinite mill
• Infinite self-mill
• Infinite storm count