Mortuary + Bloodflow Connoisseur + Serrated Scorpion + Gwenom, Remorseless

Mortuary

Bloodflow Connoisseur

Serrated Scorpion

Gwenom, Remorseless

How it works

1. Activate Bloodflow Connoisseur by sacrificing Serrated Scorpion.
2. When Serrated Scorpion dies, it and Mortuary triggers.
3. Resolve the Mortuary trigger, putting Serrated Scorpion from your graveyard onto the top of your library.
4. Resolve the Serrated Scorpion trigger, causing you to gain 2 life and dealing 2 damage to each opponent.
5. Resolve the Bloodflow Connoisseur ability.
6. Cast Serrated Scorpion from the top of your library by paying 1 life due to Gwenom.
7. Repeat.

This lethal loop relies on Mortuary to intercept your creatures as they hit the graveyard, immediately recycling them back to the top of your library. From there, Gwenom, Remorseless lets you bypass traditional mana costs by paying life instead, seamlessly chaining right into Bloodflow Connoisseur's sacrifice outlet. Each iteration is fueled by the sacrifice of Serrated Scorpion, whose death triggers drain your opponents and gain you life to comfortably offset Gwenom's life-payment cost, while simultaneously pumping Bloodflow Connoisseur into a massive threat.