Is Bloodcrazed Socialite legal in Standard, Modern, and Commander?

Bloodcrazed Socialite is legal in: Modern, Pioneer, Legacy, Vintage, Commander, Pauper, Historic.

What type of card is Bloodcrazed Socialite?

Bloodcrazed Socialite is a Creature — Vampire. Its oracle text reads: "Menace When this creature enters, create a Blood token. (It's an artifact with "{1}, {T}, Discard a card, Sacrifice this token: Draw a card.") Whenever this creature attacks, you may sacrifice a Blood token. If you do, it gets +2/+2 until end of turn."