Eirdu, Carrier of Dawn // Isilu, Carrier of Twilight, Blasting Station, and Geralf's Messenger

Prerequisites

• Eirdu, Carrier of Dawn // Isilu, Carrier of Twilight on the battlefield
• Blasting Station on the battlefield
• Geralf's Messenger on the battlefield

Steps

1. Activate Blasting Station by tapping it and sacrificing Geralf's Messenger When Geralf's Messenger dies, its undying ability triggers, returning it from your graveyard to the battlefield with a +1/+1 counter on it
2. When Geralf's Messenger enters, it and Blasting Station trigger
3. Resolve the Blasting Station trigger, untapping it
4. Resolve the Geralf's Messenger trigger, causing an opponent to lose 2 life
5. Activate Blasting Station by tapping it and sacrificing Geralf's Messenger When Geralf's Messenger dies, its persist ability triggers, returning it from your graveyard to the battlefield with a -1/-1 counter on it
6. Repeat steps 3 through 5 once
7. Resolve the Blasting Station abilities from step 1 and 6
8. Repeat

Results

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