Mortuary + Bolas's Citadel + Goblin Firestarter + Panicked Bystander // Cackling Culprit

Mortuary

Bolas's Citadel

Goblin Firestarter

Panicked Bystander // Cackling Culprit

How it works

1. Activate Goblin Firestarter by sacrificing it.
2. When Goblin Firestarter dies, Mortuary and Panicked Bystander // Cackling Culprit trigger.
3. Resolve the Mortuary trigger, putting Goblin Firestarter from your graveyard onto the top of your library.
4. Resolve the Panicked Bystander // Cackling Culprit trigger, causing you to gain 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 looping masterpiece transforms a humble Goblin Firestarter into an infinite life and damage engine by turning your library into a recycling bin. You use Bolas's Citadel to cast the Firestarter directly from the top of your deck, bypassing its mana cost entirely by paying a single point of life instead. Whenever you sacrifice the Firestarter, Mortuary immediately catches it on its way to the graveyard and slides it right back to the top of your library for the Citadel to play again. Meanwhile, Panicked Bystander // Cackling Culprit sits back and cushions the life-paying cost by netting you a life point on every single death trigger, completely neutralizing the Citadel's self-inflicted damage and letting you repeat the fiery loop infinitely.