Mortuary + Dross Harvester + Mogg Fanatic + Bolas's Citadel

Mortuary

Dross Harvester

Mogg Fanatic

Bolas's Citadel

How it works

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

By fusing Bolas's Citadel with Mortuary, you unlock a grim recycling loop where the top of your library becomes an endless armory. You sacrifice Mogg Fanatic to ping your targets, and its death triggers both Mortuary—which neatly tucks the goblin right back onto the top of your library—and Dross Harvester, whose life-draining drawback is happily offset by the steady stream of creature deaths. This life buffer is crucial because Bolas's Citadel lets you bypass standard mana costs, allowing you to recast Mogg Fanatic over and over by paying life instead, sealing an infinite loop of destruction.