Farid, Enterprising Salvager + Metalwork Colossus + Pitiless Plunderer + Krark-Clan Ironworks

Farid, Enterprising Salvager

Metalwork Colossus

Pitiless Plunderer

Krark-Clan Ironworks

How it works

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