Beifong's Bounty Hunters + Felidar Retreat + Phantom Train

Beifong's Bounty Hunters

Felidar Retreat

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, Felidar Retreat triggers, creating a creature token.
7. Resolve the Phantom Train ability.
8. Repeat.

This loop turns Phantom Train into a relentless sacrifice engine by feeding it your own lands as the ultimate fuel source. Each time you sacrifice the land animated by Beifong's Bounty Hunters, its death triggers the enchantment to return it straight to the battlefield, neatly dodging permanent loss. That returning land immediately triggers Felidar Retreat to reinforce your board with a fresh Cat Beast token, while the repeated sacrifices continuously bulk up Phantom Train with a storm of +1/+1 counters.