Yahenni, Undying Partisan + Nether Traitor + Pawn of Ulamog + Pitiless Plunderer

Yahenni, Undying Partisan

Nether Traitor

Pawn of Ulamog

Pitiless Plunderer

How it works

1. Activate Yahenni by sacrificing Nether Traitor.
2. When Nether Traitor dies, Pitiless Plunderer and Pawn of Ulamog trigger.
3. Resolve the Pitiless Plunderer trigger, creating a Treasure artifact token.
4. Resolve the Pawn of Ulamog trigger, creating a 0/1 Eldrazi Spawn token.
5. Resolve the Yahenni ability, giving it indestructible until end of turn.
6. Activate the Eldrazi Spawn token by sacrificing it, adding C.
7. When the Eldrazi Spawn dies, Pitiless Plunderer and Nether Traitor trigger.
8. Resolve the Pitiless Plunderer trigger, creating another Treasure token.
9. Activate a Treasure token by tapping and sacrificing it, adding .
10. Resolve the Nether Traitor trigger, causing you to pay to return it from your graveyard to the battlefield.
11. Repeat.

This clever loop turns a single sacrifice into a self-sustaining engine of death and rebirth. By feeding Nether Traitor to Yahenni, Undying Partisan, you trigger a cascade of benefits: Pitiless Plunderer generates a Treasure token while Pawn of Ulamog spawns an Eldrazi Spawn. Sacrificing that Eldrazi Spawn provides the necessary colorless mana and triggers Pitiless Plunderer once more, allowing you to convert your accumulated Treasures into the black mana needed for Nether Traitor's own resurrection ability.