Mortuary + Ashes of the Abhorrent + Spore Frog + Gwenom, Remorseless

Mortuary

Ashes of the Abhorrent

Spore Frog

Gwenom, Remorseless

How it works

1. Activate Spore Frog by sacrificing it.
2. When Spore Frog dies, Mortuary and Ashes of the Abhorrent trigger.
3. Resolve the Mortuary trigger, putting Spore Frog from your graveyard onto the top of your library.
4. Resolve the Ashes of the Abhorrent trigger, causing you to gain 1 life
5. Resolve the Spore Frog ability.
6. Cast Spore Frog from the top of your library by paying 1 life.
7. Repeat.

This loop locks out combat entirely by leveraging Mortuary to recycle Spore Frog back to the top of your library every time it dies. Gwenom, Remorseless is the engine that makes the recursion free, allowing you to bypass mana costs and recast Spore Frog directly from the top of your library by paying life instead. Meanwhile, Ashes of the Abhorrent serves a dual purpose: its passive ability keeps opponents from messing with your graveyard, while its triggered ability cushions the life cost of Gwenom, Remorseless by gaining you 1 life with every single sacrifice.