Is Sanguine Savior legal in Standard, Modern, and Commander?

Sanguine Savior is legal in: Standard, Modern, Pioneer, Legacy, Vintage, Commander, Pauper, Historic.

What type of card is Sanguine Savior?

Sanguine Savior is a Creature — Vampire Cleric. Its oracle text reads: "Flying, lifelink Disguise {W/B}{W/B} (You may cast this card face down for {3} as a 2/2 creature with ward {2}. Turn it face up any time for its disguise cost.) When this creature is turned face up, another target creature you control gains lifelink until end of turn."