Bloodspell (TVD Fanfiction)

Blair Gilbert, Elena's older sister, is a beautiful, popular and confident 18-year-old girl. She's also a siphoner on her mother's side and an untriggered werewolf on her father's, with the potential to become a tribrid. Damon Salvatore needs her help with opening the tomb and so they strike a dangerous bargain. But what started as a game of desire and convenience, could ignite into feelings neither of them expected. Story starts in the pilot episode. Damon/OC.