Is Defender of the Order legal in Standard, Modern, and Commander?

Defender of the Order is legal in: Legacy, Vintage, Commander.

What type of card is Defender of the Order?

Defender of the Order is a Creature — Human Cleric. Its oracle text reads: "Morph {W}{W} (You may cast this card face down as a 2/2 creature for {3}. Turn it face up any time for its morph cost.) When this creature is turned face up, creatures you control get +0/+2 until end of turn."