Nether Traitor, Kheru Goldkeeper, Quintorius, Field Historian, and Yahenni, Undying Partisan

Prerequisites

• Nether Traitor on the battlefield
• Kheru Goldkeeper on the battlefield
• Quintorius, Field Historian on the battlefield
• Yahenni, Undying Partisan on the battlefield
• available

Steps

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 Quintorius 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

Results

• Infinite ETB
• Infinite LTB
• Infinite death triggers
• Infinite sacrifice triggers