Buffy was resurrected by her friends using some dark, dark magic. All magic has its price. They paid the price in the form of Buffy coming back as the undead thing she used to kill. With a vengeance against the living, it's time the world paid her back for all she did. Now she has the power to make it so. Spuffy. evil!vamp!Buffy Prompt by Emolichic1.