Shepherd of the Cosmos + Altar of Dementia + Necrogen Communion

Shepherd of the Cosmos

Altar of Dementia

Necrogen Communion

How it works

1. Activate Altar of Dementia by sacrificing Shepherd of the Cosmos.
2. When Shepherd of the Cosmos dies, Necrogen Communion triggers, returning Shepherd of the Cosmos from your graveyard to the battlefield.
3. When Shepherd of the Cosmos enters the battlefield, it triggers, returning Necrogen Communion from your graveyard to the battlefield attached to Shepherd of the Cosmos.
4. Resolve the Altar of Dementia ability, causing target player to mill cards equal to Shepherd of the Cosmos' power.
5. Repeat.

This clever resurrection loop uses Necrogen Communion as the binding agent, turning the graveyard into a permanent staging ground for Shepherd of the Cosmos. Because Shepherd of the Cosmos has a mana value of 2 or less, its entry-level trigger naturally finds and reattaches Necrogen Communion every time it returns, while Necrogen Communion's death trigger ensures the Shepherd comes right back whenever it hits the bin. Altar of Dementia acts as the engine that kicks off this perpetual cycle, sacrificing the Shepherd to mill away your opponent's library card by card through an endless loop of death and rebirth.