Beifong's Bounty Hunters + Bloodghast + Spawning Pit

Beifong's Bounty Hunters

Bloodghast

Spawning Pit

How it works

1. Activate Spawning Pit by sacrificing Bloodghast
2. When Bloodghast dies, Beifong's Bounty Hunters triggers, earthbending a land you control.
3. Resolve the Spawning Pit ability.
4. Activate Spawning Pit by sacrificing the earthbent land.
5. When the land dies, it triggers, returning it from your graveyard to the battlefield tapped.
6. When the land enters, Bloodghast triggers, returning Bloodghast from your graveyard to the battlefield.
7. Resolve the Spawning Pit ability.
8. Repeat.