Is Amber Prison legal in Standard, Modern, and Commander?

Amber Prison is legal in: Legacy, Vintage, Commander.

What type of card is Amber Prison?

Amber Prison is an Artifact. Its oracle text reads: "You may choose not to untap Amber Prison during your untap step.{4}, {T}: Tap target artifact, creature, or land. That permanent doesn't untap during its controller's untap step for as long as Amber Prison remains tapped."

Amber Prison

Artifact

You may choose not to untap Amber Prison during your untap step.<br>, : Tap target artifact, creature, or land. That permanent doesn't untap during its controller's untap step for as long as Amber Prison remains tapped.