Beifong's Bounty Hunters + Goblin Bombardment + Down in the Valley

Beifong's Bounty Hunters

Goblin Bombardment

Down in the Valley

How it works

1. Activate Goblin Bombardment by sacrificing another nonland creature you control.
2. When the creature dies, Beifong's Bounty Hunters triggers, earthbending a land.
3. Resolve the Goblin Bombardment ability.
4. Activate Goblin Bombardment 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, Down in the Valley triggers, creating a creature token.
7. Resolve the Goblin Bombardment ability.
8. Repeat.