Mortuary + Falkenrath Noble + Bile Urchin + Bolas's Citadel

Mortuary

Falkenrath Noble

Bile Urchin

Bolas's Citadel

How it works

1. Activate Bile Urchin by sacrificing it.
2. When Bile Urchin dies, Mortuary and Falkenrath Noble trigger.
3. Resolve the Mortuary trigger, putting Bile Urchin from your graveyard onto the top of your library.
4. Resolve the Falkenrath Noble trigger, causing you to gain 1 life and target opponent to lose 1 life.
5. Resolve the Bile Urchin ability.
6. Cast Bile Urchin from the top of your library by paying 1 life.
7. Repeat.

This loop turns a humble goblin into a lethal engine by utilizing Bolas's Citadel to bypass traditional mana costs, letting you recast Bile Urchin straight from the top of your library for a mere 1 life. Every time you sacrifice the Urchin, Mortuary steps in to neatly tuck it right back onto the top of your library, ensuring the fodder never truly runs out. Meanwhile, Falkenrath Noble watches the endless procession of dying creatures to drain away your opponents' life totals while comfortably padding your own, completely fueling the life-payment requirement needed to keep the Citadel casting the Urchin over and over again.