Beifong's Bounty Hunters + Gravecrawler + Tiller Engine + Carrion Feeder

Beifong's Bounty Hunters

Gravecrawler

Tiller Engine

Carrion Feeder

How it works

1. Activate Carrion Feeder by sacrificing Gravecrawler.
2. When Gravecrawler dies, Beifong's Bounty Hunters triggers, earthbending a land that can tap to produce at least .
3. Resolve the Carrion Feeder ability.
4. Activate Carrion Feeder 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, Tiller Engine triggers, untapping the land.
7. Resolve the Carrion Feeder ability.
8. Activate the land by tapping it, adding at least .
9. Cast Gravecrawler from your graveyard by paying .
10. Repeat.