Koll, the Forgemaster + Ronin Warclub + Crookshank Kobolds + Goblin Bombardment

Koll, the Forgemaster

Ronin Warclub

Crookshank Kobolds

Goblin Bombardment

How it works

1. Cast Crookshank Kobolds by paying 0.
2. When Crookshank Kobolds enters the battlefield, Ronin Warclub triggers, attaching Ronin Warclub to Crookshank Kobolds.
3. Activate Goblin Bombardment by sacrificing Crookshank Kobolds.
4. When Crookshank Kobolds dies, Koll triggers, returning Crookshank Kobolds from your graveyard to your hand.
5. Resolve the Goblin Bombardment ability, dealing 1 damage to any target.
6. Repeat.