Beifong's Bounty Hunters + Bloodghast + Umbral Collar Zealot

Beifong's Bounty Hunters

Bloodghast

Umbral Collar Zealot

How it works

1. Activate Umbral Collar Zealot by sacrificing Bloodghast
2. When Bloodghast dies, Beifong's Bounty Hunters triggers, earthbending a land you control.
3. Resolve the Umbral Collar Zealot ability.
4. Activate Umbral Collar Zealot 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 Umbral Collar Zealot ability.
8. Repeat.