Beifong's Bounty Hunters, Field of the Dead, and Yahenni, Undying Partisan

Prerequisites

• Beifong's Bounty Hunters on the battlefield
• Field of the Dead on the battlefield
• Yahenni, Undying Partisan on the battlefield

Steps

1. Activate Yahenni by sacrificing another nonland creature you control When the creature dies, Beifong's Bounty Hunters triggers, earthbending a land
2. Resolve the Yahenni ability, giving them indestructible until end of turn
3. Activate Yahenni by sacrificing the land When the land dies, Beifong's Bounty Hunters triggers, returning the land from your graveyard to the battlefield tapped
4. When the land enters, Field of the Dead triggers, creating a 2/2 black Zombie creature token Resolve the Yahenni ability, giving them indestructible until end of turn
5. Repeat
6. Activate Yahenni by sacrificing another nonland creature you control
7. When the creature dies, Beifong's Bounty Hunters triggers, earthbending a land you control
8. Resolve the Yahenni ability
9. Activate Yahenni by sacrificing the earthbent land
10. When the land dies, Beifong's Bounty Hunters triggers, returning the land from your graveyard to the battlefield tapped
11. When the land enters, Field of the Dead triggers, creating a 2/2 Zombie creature token
12. Resolve the Yahenni ability
13. Repeat

Results

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