Mikaeus, the Unhallowed + Goblin Bombardment + Furystoke Giant

Mikaeus, the Unhallowed

Goblin Bombardment

Furystoke Giant

How it works

1. Activate Goblin Bombardment by sacrificing Furystoke Giant.
2. When Furystoke Giant 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 Furystoke Giant.
5. When Furystoke Giant 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.