Sek'Kuar, Deathkeeper + Warren Soultrader + Nether Traitor + Vein Ripper

Sek'Kuar, Deathkeeper

Warren Soultrader

Nether Traitor

Vein Ripper

How it works

1. Activate Warren Soultrader by sacrificing Nether Traitor and paying 1 life.
2. When Nether Traitor dies, Vein Ripper and Sek'Kuar trigger.
3. Resolve the Vein Ripper trigger, causing you to gain 2 life and an opponent to lose 2 life.
4. Resolve the Sek'Kuar trigger, creating a 3/1 Graveborn creature token.
5. Resolve the Warren Soultrader ability, creating a Treasure token.
6. Activate the Treasure by tapping and sacrificing it, adding .
7. Activate Warren Soultrader by paying 1 life and sacrificing the Graveborn.
8. When the Graveborn dies, Vein Ripper and Nether Traitor trigger.
9. Resolve the Vein Ripper trigger, causing you to gain 2 life and an opponent to lose 2 life.
10. Resolve the Nether Traitor trigger, causing you to pay to return Nether Traitor from your graveyard to the battlefield.
11. Resolve the Warren Soultrader ability, creating a Treasure token.
12. Repeat.

This elegant loop turns Warren Soultrader into a relentless engine of sacrifice by continuously cycling creatures through the graveyard, fueled by the mana from generated Treasure tokens. Nether Traitor provides the persistent recursion by leveraging its own death trigger to return for a single black mana, while Sek'Kuar, Deathkeeper steps in to fabricate a 3/1 Graveborn token on alternate iterations to keep the sacrifice fodder flowing. Meanwhile, Vein Ripper oversees the entire macabre assembly with its static drain ability, translating every single creature death into an unstoppable wave of life loss for your opponents and life gain for you.