Harry Potter and the Gang of Black Dragons

(Part 1) Harry's seventh year. Harry knows war is on it's way and realizes he can't win this one by himself. He will need the help of his friends, his old allies, his new allies and allies he didn't even know existed. He knows it's going to be an uphill battle but that's never stopped him before. RATED MATURE! HP/GW, HG/RW, SF/LB, DT/PP, NL/HA, TB/PP, DG/BZ among many others!