Beifong's Bounty Hunters, Khalni Garden, and Phantom Train

Prerequisites

• Beifong's Bounty Hunters on the battlefield
• Khalni Garden on the battlefield
• Phantom Train on the battlefield

Steps

1. Activate Phantom Train by sacrificing another nonland creature you control
2. When the creature dies, Beifong's Bounty Hunters triggers, earthbending Khalni Garden
3. Resolve the Phantom Train ability
4. Activate Phantom Train by sacrificing Khalni Garden
5. When Khalni Garden dies, it triggers, returning it from your graveyard to the battlefield tapped
6. When Khalni Garden enters, it triggers, creating a 0/1 Plant creature token
7. Resolve the Phantom Train ability
8. Repeat

Results

• Infinite LTB
• Infinite ETB
• Infinite sacrifice triggers
• Infinite death triggers
• Infinite landfall triggers
• Infinite +1/+1 counters on a creature