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

Koll, the Forgemaster

Sai of the Shinobi

Shield Sphere

Goblin Bombardment

How it works

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.

This clever loop turns a 0-mana artifact into a deadly weapon by exploiting some unique continuous interactions. Because Shield Sphere enters the battlefield for free, Sai of the Shinobi immediately triggers to equip itself, ensuring Shield Sphere counts as equipped for Koll, the Forgemaster. When you sacrifice Shield Sphere to Goblin Bombardment's activation, Koll's triggered ability steps in to rescue it from the graveyard and return it straight to your hand, allowing you to recast it and repeat the cycle for infinite damage.