Luminous Broodmoth + Pitiless Plunderer + Reassembling Skeleton + Yahenni, Undying Partisan

Luminous Broodmoth

Pitiless Plunderer

Reassembling Skeleton

Yahenni, Undying Partisan

How it works

1. Activate Yahenni 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 Yahenni by sacrificing Reassembling Skeleton.
6. When Reassembling Skeleton dies, Pitiless Plunderer triggers, creating a Treasure token.
7. Resolve the Yahenni 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.