Mikaeus, the Unhallowed + Umbral Collar Zealot + Brambleback Brute

Mikaeus, the Unhallowed

Umbral Collar Zealot

Brambleback Brute

How it works

1. Activate Umbral Collar Zealot by sacrificing Brambleback Brute.
2. When Brambleback Brute dies, its undying ability triggers, returning it from your graveyard to the battlefield without a +1/+1 counter on it due to its replacement effect.
3. Resolve the Umbral Collar Zealot ability
4. Repeat.