Is Soaring Sandwing legal in Standard, Modern, and Commander?

Soaring Sandwing is legal in: Standard, Modern, Pioneer, Legacy, Vintage, Commander, Pauper, Historic.

What type of card is Soaring Sandwing?

Soaring Sandwing is a Creature — Dinosaur. Its oracle text reads: "Flying When this creature enters, you gain 3 life. Plainscycling {2} ({2}, Discard this card: Search your library for a Plains card, reveal it, put it into your hand, then shuffle.)"