Is Pit Automaton legal in Standard, Modern, and Commander?

Pit Automaton is legal in: Standard, Modern, Pioneer, Legacy, Vintage, Commander, Historic.

What type of card is Pit Automaton?

Pit Automaton is an Artifact Creature — Construct. Its oracle text reads: "Defender {T}: Add {C}{C}. Spend this mana only to activate abilities. {2}, {T}: When you next activate an exhaust ability that isn't a mana ability this turn, copy it. You may choose new targets for the copy. Power/Toughness: 0/4"