Nether Traitor + Kheru Goldkeeper + Tormod, the Desecrator + Yahenni, Undying Partisan

Nether Traitor

Kheru Goldkeeper

Tormod, the Desecrator

Yahenni, Undying Partisan

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 Tormod triggers, creating a Treasure token and creature token.
5. Resolve the Yahenni ability.
6. Activate the Treasure by tapping and sacrificing it, adding .
7. Repeat.