Eirdu, Carrier of Dawn // Isilu, Carrier of Twilight + Blasting Station + Sightless Ghoul

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

Blasting Station

Sightless Ghoul

How it works

1. Activate Blasting Station by tapping it and sacrificing Sightless Ghoul
2. When Sightless Ghoul dies, its undying ability triggers, returning it from your graveyard to the battlefield with a +1/+1 counter on it.
3. When Sightless Ghoul enters, Blasting Station triggers, untapping Blasting Station.
4. Activate Blasting Station by tapping it and sacrificing Sightless Ghoul
5. When Sightless Ghoul dies, its persist ability triggers, returning it from your graveyard to the battlefield with a -1/-1 counter on it.
6. When Sightless Ghoul enters, Blasting Station triggers, untapping Blasting Station.
7. Resolve the Blasting Station abilities from step 1 and 4.
8. Repeat.