Is Umbral Mantle legal in Standard, Modern, and Commander?

Umbral Mantle is legal in: Modern, Legacy, Vintage, Commander.

What type of card is Umbral Mantle?

Umbral Mantle is an Artifact — Equipment. Its oracle text reads: "Equipped creature has "{3}, {Q}: This creature gets +2/+2 until end of turn." ({Q} is the untap symbol.) Equip {0} *It harnesses the power of night in a land where daylight fears to show itself.*"