Infernal Vessel, Valkyrie's Call, and Blasting Station

Prerequisites

• Infernal Vessel on the battlefield
• Valkyrie's Call on the battlefield
• Blasting Station on the battlefield

Steps

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

Results

• Infinite LTB
• Infinite ETB
• Infinite sacrifice triggers
• Infinite death triggers
• Infinite damage