Eirdu, Carrier of Dawn // Isilu, Carrier of Twilight + Spawning Pit + Visionary Augmenter

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

Spawning Pit

Visionary Augmenter

How it works

1. Activate Spawning Pit by sacrificing Visionary Augmenter.
2. When Visionary Augmenter dies, its persist ability triggers, returning it from your graveyard to the battlefield with a -1/-1 counter on it.
3. When Visionary Augmenter enters, its fabricate ability triggers, putting a +1/+1 counter on it.
4. Resolve the Spawning Pit ability.
5. Repeat.