Mortuary + Umbral Collar Zealot + Fear of Lost Teeth + Gwenom, Remorseless

Mortuary

Umbral Collar Zealot

Fear of Lost Teeth

Gwenom, Remorseless

How it works

1. Activate Umbral Collar Zealot by sacrificing Fear of Lost Teeth.
2. When Fear of Lost Teeth dies, it and Mortuary triggers.
3. Resolve the Mortuary trigger, putting Fear of Lost Teeth from your graveyard onto the top of your library.
4. Resolve the Fear of Lost Teeth trigger, causing you to gain 1 life and dealing 1 damage to any target
5. Resolve the Umbral Collar Zealot ability.
6. Cast Fear of Lost Teeth from the top of your library by paying 1 life due to Gwenom.
7. Repeat.

This loop transforms a modest sacrifice outlet into a lethal engine by turning your library into an endless supply of ammunition. Every time you use Umbral Collar Zealot to sacrifice Fear of Lost Teeth, Mortuary ensures the creature goes straight back to the top of your library instead of staying in the graveyard. Gwenom, Remorseless is the linchpin that lets you bypass normal casting restrictions, allowing you to continually play Fear of Lost Teeth straight from the top of your library by trading life instead of mana. Because Fear of Lost Teeth deals damage and gains you life whenever it dies, its own demise triggers the exact life gain needed to safely pay Gwenom's alternative casting cost over and over again, closing out the game in a flurry of infinite damage.