Shilgengar, Sire of Famine

Flying
Sacrifice another creature: Create a Blood
token. If you sacrificed an Angel this way, create a number of Blood tokens equal
to its toughness instead.
{w/b}{w/b}{w/b}, Sacrifice six Blood tokens: Return
each creature card from your graveyard to
the battlefield with a finality counter on it.
Those creatures are Vampires in addition to their other types.