Sek'Kuar, Deathkeeper + Warren Soultrader + Nether Traitor + Impassioned Orator

Sek'Kuar, Deathkeeper

Warren Soultrader

Nether Traitor

Impassioned Orator

How it works

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

This loop creates a self-sustaining engine of sacrifice and resurrection by leveraging Warren Soultrader to repeatedly cash in your creatures for Treasures. Nether Traitor serves as the primary recurrent sacrifice target, slipping back to the battlefield from the graveyard using the black mana generated by those very Treasures. Meanwhile, Sek'Kuar, Deathkeeper translates each of those deaths into a hasty Graveborn token, whose own subsequent sacrifice keeps the chain moving. Finally, Impassioned Orator cushions the life cost of Warren Soultrader's activations by padding your total with every new arrival, letting you repeat the entire process indefinitely.