Mortuary + Skirk Prospector + Bolas's Citadel + Susurian Voidborn

Mortuary

Skirk Prospector

Bolas's Citadel

Susurian Voidborn

How it works

1. Activate Skirk Prospector by sacrificing it.
2. When Skirk Prospector dies, Mortuary and Susurian Voidborn trigger.
3. Resolve the Mortuary trigger, putting Skirk Prospector from your graveyard onto the top of your library.
4. Resolve the Susurian Voidborn trigger, causing you to gain 1 life and target opponent to lose 1 life.
5. Cast Skirk Prospector from the top of your library by paying 1 life.
6. Repeat.

This clever loop turns the graveyard into an endless supply depot by letting Mortuary intercept Skirk Prospector every time it hits the dirt, neatly cycling the Goblin right back to the top of your library. From there, Bolas's Citadel steps in to bypass normal mana constraints entirely, letting you recast the Prospector directly from the library while paying life instead of mana. Meanwhile, Susurian Voidborn watches the carnage unfold, converting each iteration into a draining life-swing that whittles down your opponents while padding your own health total to sustain the Citadel's cost.