Mortuary + Bolas's Citadel + Goblin Firestarter + Bastion of Remembrance

Mortuary

Bolas's Citadel

Goblin Firestarter

Bastion of Remembrance

How it works

1. Activate Goblin Firestarter by sacrificing it.
2. When Goblin Firestarter dies, Mortuary and Bastion of Remembrance trigger.
3. Resolve the Mortuary trigger, putting Goblin Firestarter from your graveyard onto the top of your library.
4. Resolve the Bastion of Remembrance trigger, causing you to gain 1 life and each opponent to lose 1 life.
5. Resolve the Goblin Firestarter ability.
6. Cast Goblin Firestarter from the top of your library by paying 1 life.
7. Repeat.

This clever loop turns the top of your library into an endless armory, fueled entirely by life rather than mana. With Bolas's Citadel letting you cast spells directly from your library, you can repeatedly deploy Goblin Firestarter by paying a single life thanks to the Citadel's alternative cost. Each time you sacrifice Goblin Firestarter to its own ability, Mortuary immediately tucks it right back onto the top of your library to be played again. Meanwhile, Bastion of Remembrance watches the carnage unfold, converting each death into a steady stream of life gain and life loss that drains your opponents out of the game.