Beifong's Bounty Hunters + Retreat to Emeria + Phantom Train

Beifong's Bounty Hunters

Retreat to Emeria

Phantom Train

How it works

1. Activate Phantom Train by sacrificing another nonland creature you control.
2. When the creature dies, Beifong's Bounty Hunters triggers, earthbending a land.
3. Resolve the Phantom Train ability.
4. Activate Phantom Train 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, Retreat to Emeria triggers, creating a creature token.
7. Resolve the Phantom Train ability.
8. Repeat.