Is Stone Idol Generator legal in Standard, Modern, and Commander?

Stone Idol Generator is legal in: Legacy, Vintage, Commander.

What type of card is Stone Idol Generator?

Stone Idol Generator is an Artifact. Its oracle text reads: "Whenever a creature you control attacks, you get {E} (an energy counter). {T}, Pay six {E}: Create a 6/12 colorless Construct artifact creature token with trample. Activate only as a sorcery. *"Like my people's ambitions, it is both awe-inspiring and unfinished." —Nahiri*"