Xena, Necromancy Empress

When Xena, Necromancy Empress enters the battlefield, gain control of each Vampire creature from any graveyard, return those creatures under your control, they gain haste.
Other Vampires you control get +1/+1.
At the beginning of your upkeep, you may pay {4}{r}{w}{b}, if you do, you gain one life for each non-vampire creature you control.
Bloodlust will get you far.