Strahd, lord of vampires

+2: Any opponent may discard 2 cards. if he or she doesn't, create 2 3/3 black vampire creature tokens with flying and you lose 3 life.
-3: create a 3/3 black vampire creature token with flying, then target opponent loses life equal to 1 plus the number of vampires you control.
-7: Put 3 3/3 black vampire creature tokens onto the battlefield, then you get an emblem with "vampires you control get +3+3."