Smaug the Impenetrable + Metalwork Colossus + Kaya, Geist Hunter + Goblin Bombardment

Smaug the Impenetrable

Metalwork Colossus

Kaya, Geist Hunter

Goblin Bombardment

How it works

1. Activate Kaya's second loyalty ability by removing two loyalty counters from it, causing you to double any tokens you create this turn.
2. Activate Goblin Bombardment by sacrificing Metalwork Colossus, dealing 1 damage to Smaug.
3. Smaug triggers, creating two artifact tokens due to Kaya, Geist Hunter.
4. Activate Metalwork Colossus by sacrificing the two artifact tokens, returning Metalwork Colossus from your graveyard to your hand.
5. Cast Metalwork Colossus by paying 0.
6. Repeat from step 2

By leveraging Kaya, Geist Hunter's minus ability, any token creation gets dangerously doubled, turning a single point of damage into a windfall. When Goblin Bombardment hurls Metalwork Colossus at Smaug the Impenetrable, Smaug's noncombat damage trigger responds by spawning two Treasure tokens instead of one. Those very same Treasures then pay the artifact sacrifice cost to pull Metalwork Colossus straight back from the graveyard to your hand, where its massive mana value reduction lets you recast it for free. This creates an airtight loop of sacrifice, damage, and artifact generation that feeds itself indefinitely.