Mortuary + Altar of Dementia + Memnite + Bolas's Citadel

Mortuary

Altar of Dementia

Memnite

Bolas's Citadel

How it works

1. Activate Altar of Dementia by sacrificing Memnite
2. When Memnite dies, Mortuary triggers, putting Memnite from your graveyard onto the top of your library.
3. Resolve the Altar of Dementia ability.
4. Cast Memnite from the top of your library by paying 0 life.
5. Repeat.

This clever loop turns the zero-mana artifact creature Memnite into an endless engine of sacrifice and recursion. By feeding Memnite to Altar of Dementia, you mill your opponents while Mortuary immediately catches the dying creature and stacks it right back on top of your library. From there, Bolas's Citadel steps in as the ultimate enabler, allowing you to bypass mana costs entirely and recast Memnite straight off the top for zero life, feeding the cycle anew.