Nether Traitor + Kheru Goldkeeper + Viscera Seer + Teval, the Balanced Scale

Nether Traitor

Kheru Goldkeeper

Viscera Seer

Teval, the Balanced Scale

How it works

1. Activate Viscera Seer by sacrificing Nether Traitor.
2. Activate Viscera Seer by sacrificing another creature.
3. When the creature dies, Nether Traitor triggers, causing you to pay to return Nether Traitor from your graveyard to the battlefield.
4. Kheru Goldkeeper and Teval triggers, creating a Treasure token and a creature token
5. Resolve the Viscera Seer ability.
6. Activate the Treasure by tapping and sacrificing it, adding .
7. Repeat.