Dominion Saboteur + Mikaeus, the Unhallowed + Blasting Station

Dominion Saboteur

Mikaeus, the Unhallowed

Blasting Station

How it works

1. Activate Blasting Station by tapping it and sacrificing Dominion Saboteur.
2. When Dominion Saboteur dies, its undying ability triggers, returning it from your graveyard to the battlefield with a +1/+1 counter on it. As it enters, choose to have it copy a non-Human you control with a -1/-1 counter on it, and then also enter with a -1/-1 counter on it.
3. When Dominion Saboteur enters, Blasting Station triggers, untapping Blasting Station.
4. Resolve the Blasting Station ability from step 1
5. Repeat.