Is Mistfire Weaver legal in Standard, Modern, and Commander?

Mistfire Weaver is legal in: Modern, Pioneer, Legacy, Vintage, Commander, Historic.

What type of card is Mistfire Weaver?

Mistfire Weaver is a Creature — Djinn Wizard. Its oracle text reads: "Flying Morph {2}{U} (You may cast this card face down as a 2/2 creature for {3}. Turn it face up any time for its morph cost.) When this creature is turned face up, target creature you control gains hexproof until end of turn."