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

Eirdu, Carrier of Dawn // Isilu, Carrier of Twilight

Blasting Station

Geralf's Messenger

How it works

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