Nether Traitor + Kheru Goldkeeper + Yahenni, Undying Partisan + Teval, the Balanced Scale

Nether Traitor

Kheru Goldkeeper

Yahenni, Undying Partisan

Teval, the Balanced Scale

How it works

1. Activate Yahenni by sacrificing Nether Traitor.
2. Activate Yahenni 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 Yahenni ability.
6. Activate the Treasure by tapping and sacrificing it, adding .
7. Repeat.