Beifong's Bounty Hunters + Yahenni, Undying Partisan + Dragonback Assault

Beifong's Bounty Hunters

Yahenni, Undying Partisan

Dragonback Assault

How it works

1. Activate Yahenni by sacrificing another nonland creature you control.
2. When the creature dies, Beifong's Bounty Hunters triggers, earthbending a land.
3. Resolve the Yahenni ability.
4. Activate Yahenni by sacrificing the land.
5. When the land dies, Beifong's Bounty Hunters triggers, returning the land from your graveyard to the battlefield tapped.
6. When the land enters, Dragonback Assault triggers, creating a creature token.
7. Resolve the Yahenni ability.
8. Repeat.