Is Eddytrail Hawk legal in Standard, Modern, and Commander?

Eddytrail Hawk is legal in: Modern, Pioneer, Legacy, Vintage, Commander, Pauper, Historic.

What type of card is Eddytrail Hawk?

Eddytrail Hawk is a Creature — Bird. Its oracle text reads: "Flying When this creature enters, you get {E}{E} (two energy counters). Whenever this creature attacks, you may pay {E}. If you do, another target attacking creature gains flying until end of turn."