Is Brain in a Jar legal in Standard, Modern, and Commander?

Brain in a Jar is legal in: Modern, Pioneer, Legacy, Vintage, Commander, Historic.

Brain in a Jar

Q: What type of card is Brain in a Jar?

Brain in a Jar is an Artifact. Its oracle text reads: "{1}, {T}: Put a charge counter on this artifact, then you may cast an instant or sorcery spell with mana value equal to the number of charge counters on this artifact from your hand without paying its mana cost. {3}, {T}, Remove X charge counters from this artifact: Scry X."

Artifact

, : Put a charge counter on this artifact, then you may cast an instant or sorcery spell with mana value equal to the number of charge counters on this artifact from your hand without paying its mana cost.