Mortuary + Altar of Dementia + Ornithopter + Gwenom, Remorseless

Mortuary

Altar of Dementia

Ornithopter

Gwenom, Remorseless

How it works

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

This clever loop lets you mill an opponent's entire library by weaponizing a free artifact creature. You start by using Altar of Dementia to sacrifice Ornithopter, which triggers Mortuary to seamlessly place the little thopter right back on top of your library instead of letting it rest in the graveyard. Because Gwenom, Remorseless is attacking, her ability grants you the vital permission to play cards directly from the top of your library while bypassing their mana costs by paying life—meaning you can replay that very same Ornithopter for zero life. Repeating this process creates an endless cycle of sacrifices and castings, fueling a massive storm count and milling out your foes in one fell swoop.