Is Avarax legal in Standard, Modern, and Commander?

Avarax is legal in: Legacy, Vintage, Commander, Pauper.

Avarax

Q: What type of card is Avarax?

Avarax is a Creature — Beast. Its oracle text reads: "Haste When this creature enters, you may search your library for a card named Avarax, reveal it, put it into your hand, then shuffle. {1}{R}: This creature gets +1/+0 until end of turn. Power/Toughness: 3/3"