Is Helm of Possession legal in Standard, Modern, and Commander?

Helm of Possession is legal in: Legacy, Vintage, Commander.

What type of card is Helm of Possession?

Helm of Possession is an Artifact. Its oracle text reads: "You may choose not to untap this artifact during your untap step. {2}, {T}, Sacrifice a creature: Gain control of target creature for as long as you control this artifact and this artifact remains tapped."