Infernal Vessel, Luminous Broodmoth, and Phantom Train

Prerequisites

• Infernal Vessel on the battlefield
• Luminous Broodmoth on the battlefield
• Phantom Train on the battlefield

Steps

1. Activate Phantom Train by sacrificing Infernal Vessel
2. When Infernal Vessel dies, it triggers, returning itself from your graveyard to the battlefield as a Demon in addition to its other types
3. Resolve the Phantom Train ability
4. Activate Phantom Train by sacrificing Infernal Vessel
5. When Infernal Vessel dies, Luminous Broodmoth triggers, returning Infernal Vessel from your graveyard to the battlefield with a flying counter on it
6. Resolve the Phantom Train ability
7. Repeat

Results

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