Is Stormwing Entity legal in Standard, Modern, and Commander?

Stormwing Entity is legal in: Modern, Pioneer, Legacy, Vintage, Commander, Historic.

Stormwing Entity

Q: What type of card is Stormwing Entity?

Stormwing Entity is a Creature — Elemental. Its oracle text reads: "This spell costs {2}{U} less to cast if you've cast an instant or sorcery spell this turn. Flying Prowess (Whenever you cast a noncreature spell, this creature gets +1/+1 until end of turn.) When this creature enters, scry 2."