Is Bronze Guardian legal in Standard, Modern, and Commander?

Bronze Guardian is legal in: Legacy, Vintage, Commander.

Bronze Guardian

Q: What type of card is Bronze Guardian?

Bronze Guardian is an Artifact Creature — Golem. Its oracle text reads: "Double strike Ward {2} (Whenever this creature becomes the target of a spell or ability an opponent controls, counter it unless that player pays {2}.) Other artifacts you control have ward {2}. Bronze Guardian's power is equal to the number of artifacts you control."