Mortuary + Mogg Fanatic + Venerated Stormsinger + Gwenom, Remorseless

Mortuary

Mogg Fanatic

Venerated Stormsinger

Gwenom, Remorseless

How it works

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

This loop transforms your library into a repeating ammunition belt by using Mortuary to catch creatures as they die and tuck them back onto your library. Meanwhile, Venerated Stormsinger acts as the ultimate pay-off, draining your opponents' life totals and gaining you life every single time a creature hits the graveyard. Gwenom, Remorseless enables you to continuously cast that creature right off the top of your library for a mere 1 life instead of its normal mana cost, completely bypassing traditional resource restrictions. Finally, Mogg Fanatic acts as the self-sacrificing engine that triggers the whole chain, letting you machine-gun down targets while looping itself indefinitely.