Luminous Broodmoth + Lesser Masticore + Grinding Station

Luminous Broodmoth

Lesser Masticore

Grinding Station

How it works

1. Activate Grinding Station by tapping it and sacrificing Lesser Masticore.
2. When Lesser Masticore dies, its persist ability triggers if it didn't have a -1/-1 counter, and Luminous Broodmoth triggers if Lesser Masticore didn't have flying.
3. Resolve the persist trigger, if applicable, returning Lesser Masticore from your graveyard to the battlefield with either a -1/-1 counter on it.
4. If Lesser Masticore enters the battlefield in step 3, Grinding Station triggers, untapping Grinding Station.
5. Resolve the Luminous Broodmoth trigger, if applicable, returning Lesser Masticore from your graveyard to the battlefield with a flying counter on it if Lesser Masticore is still in your graveyard.
6. If Lesser Masticore enters the battlefield in step 5, Grinding Station triggers, untapping Grinding Station.
7. Resolve the Grinding Station ability from step 1.
8. Repeat.