Thornbite Staff, Bloodline Keeper // Lord of Lineage, and Yahenni, Undying Partisan

Prerequisites

• Thornbite Staff on the battlefield
• Bloodline Keeper // Lord of Lineage on the battlefield
• Yahenni, Undying Partisan on the battlefield

Steps

1. Activate Bloodline Keeper // Lord of Lineage by tapping it, creating a creature token
2. Activate Yahenni by sacrificing the creature token
3. When the creature token dies, Bloodline Keeper // Lord of Lineage triggers due to its ability granted to it by Thornbite Staff, untapping Bloodline Keeper // Lord of Lineage
4. Resolve the Yahenni ability, Repeat

Results

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