Eirdu, Carrier of Dawn // Isilu, Carrier of Twilight + Altar of Dementia + Butcher Ghoul

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

Altar of Dementia

Butcher Ghoul

How it works

1. Activate Altar of Dementia 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 Altar of Dementia ability.
4. Activate Altar of Dementia 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 Altar of Dementia ability from step 4.
8. Repeat from step 4.