Tyrant's Machine

In Commander, Tyrant's Machine occupies an awkward niche: artifact-tap effects matter most in stax and control shells, but those shells almost always prefer Phyrexian Revoker, Karn, the Great Creator, or Null Rod because they answer artifacts permanently rather than one at a time. Competitive tables move too fast for a pay-two-tap loop to disrupt a Mana Crypt or Isochron Scepter reliably across multiple opponents. In Pauper, where the card is legal, the format's artifact density is high enough that Tyrant's Machine could see fringe play in artifact-hate sideboards, though dedicated removal like Gorilla Shaman does the job cheaper. Across Legacy, Modern, and Pioneer, it is simply outclassed — those formats have no shortage of permanent, efficient artifact disruption at lower mana investment.