Stalwart Successor + Goblin Bombardment + Furystoke Giant

Stalwart Successor

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. When Furystoke Giant enters, Stalwart Successor triggers, putting a +1/+1 counter on Furystoke Giant
4. Resolve the Goblin Bombardment ability.
5. Repeat.