Mortuary + Falkenrath Noble + Wild Cantor + Bolas's Citadel

Mortuary

Falkenrath Noble

Wild Cantor

Bolas's Citadel

How it works

1. Activate Wild Cantor by sacrificing it.
2. When Wild Cantor dies, Mortuary and Falkenrath Noble trigger.
3. Resolve the Mortuary trigger, putting Wild Cantor 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. Cast Wild Cantor from the top of your library by paying 1 life.
6. Repeat.

This elegant loop turns the top of your library into an endless engine of life and mana. Bolas's Citadel allows you to cast spells directly from your library by paying life instead of mana, letting you cast Wild Cantor for a mere 1 life. The moment Wild Cantor is sacrificed for mana, Mortuary catches it on the way to the graveyard and places it right back on top of your library. Meanwhile, Falkenrath Noble watches the sacrifice and death occur, draining your opponent's life while replenishing the life you spent on Bolas's Citadel.