Eirdu, Carrier of Dawn // Isilu, Carrier of Twilight + Carrion Feeder + Hancock, Ghoulish Mayor

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

Carrion Feeder

Hancock, Ghoulish Mayor

How it works

1. Activate Carrion Feeder by sacrificing Hancock
2. When Hancock dies, its undying ability triggers, returning it from your graveyard to the battlefield with a +1/+1 counter on it.
3. Resolve the Carrion Feeder ability.
4. Activate Carrion Feeder by sacrificing Hancock
5. When Hancock dies, its persist ability triggers, returning it from your graveyard to the battlefield with a -1/-1 counter on it.
6. Hancock 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 Carrion Feeder ability from step 4.
8. Repeat from step 4.

This elegant loop turns Eirdu, Carrier of Dawn // Isilu, Carrier of Twilight into an engine of endless resurrection, relying on its night-side's ability to grant persist to your other nontoken creatures while Carrion Feeder acts as the sacrificial outlet. When Hancock, Ghoulish Mayor is fed to the Feeder, its native undying and the newly granted persist alternate with state-based zero-toughness cleanups, allowing Hancock to bounce back and forth between the graveyard and the battlefield indefinitely. Every time Hancock returns, it pumps up Carrion Feeder with infinite counters and floods the board with an unceasing wave of death, entry, and sacrifice triggers.