Mikaeus, the Unhallowed + Blasting Station + Pith Driller

Mikaeus, the Unhallowed

Blasting Station

Pith Driller

How it works

1. Activate Blasting Station by tapping it and sacrifiicing Pith Driller.
2. When Pith Driller dies, its undying ability triggers, returning it from your graveyard to the battlefield with a +1/+1 counter on it.
3. When Pith Driller enters the battlefield, it and Blasting Station trigger.
4. Resolve the Pith Driller trigger, putting a -1/-1 counter on it.
5. Resolve the Blasting Station trigger from step 3, untapping it.
6. Resolve the Blasting Station ability from step 1, dealing 1 damage to any target.
7. Repeat.

This lethal loop relies on Mikaeus, the Unhallowed to grant undying to non-Human creatures, turning Pith Driller into a self-resurrecting engine whenever it perishes. By feeding Pith Driller to Blasting Station, you can constantly trigger the artifact's damage output while also using its untap ability to ready it for the next iteration. The clever twist that keeps the loop going indefinitely is Pith Driller's own entry trigger, which places a -1/-1 counter on itself to instantly cancel out the +1/+1 counter from undying, ensuring it never accumulates counters that would prevent it from triggering again.