Mikaeus, the Unhallowed + Defiant Greatmaw + Bartolomé del Presidio

Mikaeus, the Unhallowed

Defiant Greatmaw

Bartolomé del Presidio

How it works

1. Activate Bartolomé del Presidio by sacrificing Defiant Greatmaw.
2. When Defiant Greatmaw dies, its undying ability triggers, returning it from your graveyard to the battlefield with a +1/+1 counter on it.
3. When Defiant Greatmaw enters the battlefield, its first ability triggers, putting two -1/-1 counters on it.
4. Defiant Greatmaw's second ability triggers, removing a -1/-1 counter from another creature you control.
5. Resolve the Bartolomé del Presidio ability from step 1, putting a +1/+1 counter on it.
6. Repeat.