Mortuary + Cruel Celebrant + Bolas's Citadel + Tinder Wall

Mortuary

Cruel Celebrant

Bolas's Citadel

Tinder Wall

How it works

1. Activate Tinder Wall by sacrificing it.
2. When Tinder Wall dies, Mortuary and Cruel Celebrant trigger.
3. Resolve the Mortuary trigger, putting Tinder Wall from your graveyard onto the top of your library.
4. Resolve the Cruel Celebrant trigger, causing you to gain 1 life and each opponent to lose 1 life.
5. Cast Tinder Wall from the top of your library by paying 1 life.
6. Repeat.

This clever loop lets you recast a single creature indefinitely by leveraging Bolas's Citadel to pay life instead of mana for spells on top of your library. Whenever you sacrifice Tinder Wall for mana, Mortuary catches it on the way to the graveyard and immediately places it right back on top of your library. Meanwhile, Cruel Celebrant watches the procession and drains your opponents' life totals with every single iteration to offset the life you spend casting.