Is Snapping Thragg legal in Standard, Modern, and Commander?

Snapping Thragg is legal in: Legacy, Vintage, Commander.

Snapping Thragg

Q: What type of card is Snapping Thragg?

Snapping Thragg is a Creature — Beast. Its oracle text reads: "Whenever this creature deals combat damage to a player, you may have it deal 3 damage to target creature that player controls. Morph {4}{R}{R} (You may cast this card face down as a 2/2 creature for {3}. Turn it face up any time for its morph cost.) Power/Toughness: 3/3"