Mortuary + Extruder + Ornithopter + Gwenom, Remorseless

Mortuary

Extruder

Ornithopter

Gwenom, Remorseless

How it works

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

This clever loop relies on Mortuary to intercept your creatures as they hit the graveyard, immediately recycling them back to the top of your library instead of letting them stay there. Extruder acts as your engine, providing a repeatable sacrifice outlet that not only triggers the death-and-return cycle but also pumps up your board with +1/+1 counters. Meanwhile, Ornithopter serves as the perfect zero-mana fuel for the sacrifice loop, returning effortlessly over and over. Finally, Gwenom, Remorseless provides the critical top-deck casting permission, letting you bypass mana costs with life payments so you can continuously replay the free artifact right off the top of your library.