Mikaeus, the Unhallowed + Goblin Bombardment + Kithkin Spellduster

Mikaeus, the Unhallowed

Goblin Bombardment

Kithkin Spellduster

How it works

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

This ingenious loop relies on a brilliant counter-cancellation quirk between Kithkin Spellduster's native persist ability and the undying bonus granted by Mikaeus, the Unhallowed. Because Kithkin Spellduster enters the graveyard alternately bearing a -1/-1 counter or a +1/+1 counter, each dying trigger neutralizes the existing counter left behind by the previous one, allowing the creature to alternate seamlessly between its two revival mechanics. Meanwhile, Goblin Bombardment acts as both the sacrificial outlet and the lethal finisher, turning this perpetual cycle of death and rebirth into an endless barrage of damage.