Eirdu, Carrier of Dawn // Isilu, Carrier of Twilight + Spawning Pit + Cultivator of Blades

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

Spawning Pit

Cultivator of Blades

How it works

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