Mikaeus, the Unhallowed + Safehold Elite + Bartolomé del Presidio

Mikaeus, the Unhallowed

Safehold Elite

Bartolomé del Presidio

How it works

1. Activate Bartolomé del Presidio by sacrificing Safehold Elite.
2. When Safehold Elite dies, its persist ability triggers, returning it from your graveyard to the battlefield with a -1/-1 counter on it.
3. Resolve the Bartolomé del Presidio ability.
4. Activate Bartolomé del Presidio by sacrificing Safehold Elite.
5. When Safehold Elite dies, its undying ability triggers, returning it from your graveyard to the battlefield with a +1/+1 counter on it.
6. Resolve the Bartolomé del Presidio ability.
7. Repeat.