Eirdu, Carrier of Dawn // Isilu, Carrier of Twilight + Ashnod's Altar + Maulfist Squad

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

Ashnod's Altar

Maulfist Squad

How it works

1. Activate Ashnod's Altar by sacrificing Maulfist Squad.
2. When Maulfist Squad dies, its persist ability triggers, returning it from your graveyard to the battlefield with a -1/-1 counter on it.
3. When Maulfist Squad enters, its fabricate ability triggers, putting a +1/+1 counter on it.
4. Repeat.

This engine relies on Eirdu, Carrier of Dawn // Isilu, Carrier of Twilight to grant your creatures persist on its back face, turning every creature sacrifice into a self-sustaining loop. When you feed Maulfist Squad to Ashnod's Altar, its persist ability brings it right back, and its fabricate ability steps in to drop a +1/+1 counter that immediately neutralizes the incoming -1/-1 counter through state-based actions. This endless cycle not only generates an infinite supply of colorless mana from the altar, but also triggers endless entry, leaving, and death triggers to fuel any secondary win condition you desire.