Krark-Clan Ironworks + Metalwork Colossus + Pitiless Plunderer + Slagstone Refinery

B identity

Commander legal

The 4 combo pieces

What must be in place

Noncreature artifacts you control have a combined mana value of ten or greater.

How to execute it

  1. Activate Krark-Clan Ironworks by sacrificing Metalwork Colossus, adding {C}{C}.
  2. When Metlwork Colossus dies, Slagstone Refinery and Pitiless Plunderer trigger.
  3. Resolve the Slagstone Refinery trigger, creating a tapped Powerstone artifact creature token.
  4. Resolve the Pitiless Plunderer trigger, creating a Treasure artifact token.
  5. Activate Metalwork Colossus by sacrificing the Powerstone token and the Treasure token, returning Metalwork Colossus from your graveyard to your hand.
  6. Cast Metalwork Colossus by paying at most {1}.
  7. Repeat.

What the combo produces