Infernal Vessel + Valkyrie's Call + Blasting Station

Infernal Vessel

Valkyrie's Call

Blasting Station

How it works

1. Activate Blasting Station by tapping it and 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. When Infernal Vessel enters the battlefield, Blasting Station triggers, untapping Blasting Station.
4. Resolve the Blasting Station ability from step 1.
5. Activate Blasting Station by tapping it and sacrificing Infernal Vessel.
6. When Infernal Vessel dies, Valkyrie's Call triggers, returning Infernal Vessel from your graveyard to the battlefield as an Angel in additional to its other types.
7. When Infernal Vessel enters the battlefield, Blasting Station triggers, untapping Blasting Station.
8. Resolve the Blasting Station ability from step 5.
9. Repeat.