Mortuary + Carrion Feeder + Fear of Lost Teeth + Gwenom, Remorseless

Mortuary

Carrion Feeder

Fear of Lost Teeth

Gwenom, Remorseless

How it works

1. Activate Carrion Feeder by sacrificing Fear of Lost Teeth.
2. When Fear of Lost Teeth dies, it and Mortuary triggers.
3. Resolve the Mortuary trigger, putting Fear of Lost Teeth from your graveyard onto the top of your library.
4. Resolve the Fear of Lost Teeth trigger, causing you to gain 1 life and dealing 1 damage to any target
5. Resolve the Carrion Feeder ability.
6. Cast Fear of Lost Teeth from the top of your library by paying 1 life due to Gwenom.
7. Repeat.

This loop sets up an efficient little recursion engine by leveraging Mortuary to catch creatures as they hit the graveyard and cycle them right back to the top of your library. Carrion Feeder acts as the sacrifice outlet that continuously triggers both Mortuary and Fear of Lost Teeth, the latter of which provides both the death trigger for damage and life manipulation. Meanwhile, Gwenom, Remorseless is the engine's enabler, allowing you to bypass mana costs and recast Fear of Lost Teeth directly from the top of your library by paying life instead—a cost easily offset by the life you gain along the way.