Is Concealed Weapon legal in Standard, Modern, and Commander?

Concealed Weapon is legal in: Standard, Modern, Pioneer, Legacy, Vintage, Commander, Historic.

What type of card is Concealed Weapon?

Concealed Weapon is an Artifact — Equipment. Its oracle text reads: "Equipped creature gets +3/+0. Disguise {2}{R} (You may cast this card face down for {3} as a 2/2 creature with ward {2}. Turn it face up any time for its disguise cost.) When this Equipment is turned face up, attach it to target creature you control. Equip {1}{R}"