Eirdu, Carrier of Dawn // Isilu, Carrier of Twilight + Umbral Collar Zealot + Butcher Ghoul

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

Umbral Collar Zealot

Butcher Ghoul

How it works

1. Activate Umbral Collar Zealot by sacrificing Butcher Ghoul
2. When Butcher Ghoul dies, its undying ability triggers, returning it from your graveyard to the battlefield with a +1/+1 counter on it.
3. Resolve the Umbral Collar Zealot ability.
4. Activate Umbral Collar Zealot by sacrificing Butcher Ghoul
5. When Butcher Ghoul dies, its persist ability triggers, returning it from your graveyard to the battlefield with a -1/-1 counter on it.
6. Butcher Ghoul enters and dies as a state-based action due to having 0 toughness. Its undying ability triggers, returning it from your graveyard to the battlefield with a +1/+1 counter on it.
7. Resolve the Umbral Collar Zealot ability from step 4.
8. Repeat from step 4.