Goblin Bombardment + Koll, the Forgemaster + Sai of the Shinobi + Shield Sphere

RW identity

Commander legal

The 4 combo pieces

How to execute it

  1. Cast Shield Sphere by paying {0}.
  2. When Shield Sphere enters the battlefield, Sai of the Shinobi triggers, attaching Sai of the Shinobi to Shield Sphere.
  3. Activate Goblin Bombardment by sacrificing Shield Sphere.
  4. When Shield Sphere dies, Koll triggers, returning Shield Sphere from your graveyard to your hand.
  5. Resolve the Goblin Bombardment ability, dealing 1 damage to any target.
  6. Repeat.

What the combo produces