Eirdu, Carrier of Dawn // Isilu, Carrier of Twilight, Blasting Station, and Demonlord of Ashmouth

Prerequisites

• Eirdu, Carrier of Dawn // Isilu, Carrier of Twilight on the battlefield
• Blasting Station on the battlefield
• Demonlord of Ashmouth on the battlefield

Steps

1. Activate Blasting Station by tapping it and sacrificing Demonlord of Ashmouth When Demonlord of Ashmouth dies, its undying ability triggers, returning it from your graveyard to the battlefield with a +1/+1 counter on it
2. When Demonlord of Ashmouth enters, it and Blasting Station trigger
3. Resolve the Blasting Station trigger, untapping it
4. Holding priority, activate Blasting Station by tapping it and sacrificing Demonlord of Ashmouth When Demonlord of Ashmouth dies, its persist ability triggers, returning it from your graveyard to the battlefield with a -1/-1 counter on it
5. Repeat steps 3 through 5 once
6. Repeat from step 2
7. Resolve all Blasting Station abilities, dealing infinite damage to any target(s)

Results

• Infinite mana creatures you control can produce
• Infinite untap of creatures you control
• Infinite ETB
• Infinite LTB
• Infinite damage
• Infinite death triggers
• Infinite sacrifice triggers