Beifong's Bounty Hunters + Gravecrawler + Spawning Pit + The Wandering Minstrel

Beifong's Bounty Hunters

Gravecrawler

Spawning Pit

The Wandering Minstrel

How it works

1. Activate Spawning Pit 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 Spawning Pit ability.
4. Activate Spawning Pit by sacrificing the land.
5. When the land dies, Beifong's Bounty Hunters triggers, returning the land from your graveyard to the battlefield untapped due to The Wandering Minstrel.
6. Resolve the Spawning Pit ability.
7. Activate the land by tapping it, adding at least .
8. Cast Gravecrawler from your graveyard by paying .
9. Repeat.