Mortuary + Thermopod + Shield Sphere + Gwenom, Remorseless

Mortuary

Thermopod

Shield Sphere

Gwenom, Remorseless

How it works

1. Activate Thermopod by sacrificing Shield Sphere
2. When Shield Sphere dies, Mortuary triggers, putting Shield Sphere from your graveyard onto the top of your library.
3. Cast Shield Sphere from the top of your library by paying 0 life.
4. Repeat.

This clever loop relies on the zero-mana artifact Shield Sphere to fuel Thermopod's sacrifice ability, generating an endless supply of red mana while triggering creature deaths. Meanwhile, Mortuary ensures that Shield Sphere never stays in the graveyard long, automatically recycling it back to the top of your library after every sacrifice. To tie the whole engine together, Gwenom, Remorseless grants you the vital permission to play cards directly from the top of your library, and because Shield Sphere costs zero mana, you can recast it endlessly without losing any life to Gwenom's alternative payment clause.