Luminous Broodmoth + Pitiless Plunderer + Reassembling Skeleton + Phantom Train

Luminous Broodmoth

Pitiless Plunderer

Reassembling Skeleton

Phantom Train

How it works

1. Activate Phantom Train by sacrificing Reassembling Skeleton.
2. When Reassembling Skeleton dies, Luminous Broodmoth and Pitiless Plunderer trigger.
3. Resolve the Luminous Broodmoth trigger, returning Reassembling Skeleton from your graveyard to the battlefield with a flying counter on it.
4. Resolve the Pitiless Plunderer trigger, creating a Treasure token.
5. Activate Phantom Train by sacrificing Reassembling Skeleton.
6. When Reassembling Skeleton dies, Pitiless Plunderer triggers, creating a Treasure token.
7. Resolve the Phantom Train abilities from steps 1 and 5
8. Activate the Treasures by tapping and sacrificing them, adding 1.
9. Activate Reassembling Skeleton by paying 1, returning it from your graveyard to the battlefield.
10. Repeat.