Is Aetherstorm Roc legal in Standard, Modern, and Commander?

Aetherstorm Roc is legal in: Modern, Pioneer, Legacy, Vintage, Commander, Historic.

What type of card is Aetherstorm Roc?

Aetherstorm Roc is a Creature — Bird. Its oracle text reads: "Flying Whenever this creature or another creature you control enters, you get {E} (an energy counter). Whenever this creature attacks, you may pay {E}{E}. If you do, put a +1/+1 counter on it and tap up to one target creature defending player controls. Power/Toughness: 3/3"