Mortuary + Shilgengar, Sire of Famine + Bolas's Citadel + Rograkh, Son of Rohgahh

Mortuary

Shilgengar, Sire of Famine

Bolas's Citadel

Rograkh, Son of Rohgahh

How it works

1. Activate Shilgengar by sacrificing Rograkh
2. When Rograkh dies, Mortuary triggers, putting Rograkh from your graveyard onto the top of your library.
3. Resolve the Shilgengar ability.
4. Cast Rograkh from the top of your library by paying 0 life.
5. Repeat.

This loop turns a free commander into an endless engine of sacrifice and resurrection. You begin by using Shilgengar, Sire of Famine to sacrifice Rograkh, Son of Rohgahh, which triggers Mortuary to immediately place Rograkh back on top of your library rather than letting him stay in the graveyard. Bolas's Citadel then grants you permission to cast Rograkh directly from that top spot, letting you bypass his mana cost by paying 0 life thanks to the Citadel's alternative payment rule. Because Shilgengar generates a Blood token every time a creature is sacrificed, this cycle creates an infinite loop of sacrifices, enter-the-battlefield events, and artifacts to power your victory.