Mortuary + Zulaport Cutthroat + Blood Pet + Gwenom, Remorseless

Mortuary

Zulaport Cutthroat

Blood Pet

Gwenom, Remorseless

How it works

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

This vicious loop turns a humble Blood Pet into an infinite engine of life and drain. By sacrificing Blood Pet for black mana, its death triggers Zulaport Cutthroat to chip away at your opponents while Mortuary catches the creature and quietly slides it right back onto the top of your library. That is where Gwenom, Remorseless comes in—her attack trigger allows you to peer into the future and cast creatures directly from the top of your library, paying life instead of mana. Because Blood Pet costs zero mana to cast, the life you pay is easily offset by the life gained from Zulaport Cutthroat's drain, letting you repeat the cycle indefinitely for boundless black mana and infinite death triggers.