Infernal Vessel + Luminous Broodmoth + Bloodflow Connoisseur

Infernal Vessel

Luminous Broodmoth

Bloodflow Connoisseur

How it works

1. Activate Bloodflow Connoisseur 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 Bloodflow Connoisseur ability.
4. Activate Bloodflow Connoisseur 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 Bloodflow Connoisseur ability.
7. Repeat.