Calamity's Reign

AU: What if Jenova isn't just some kind of sentient alien-virus? What if it was but one of many, the first of it's race that Gaia encountered? During one of Sephiroth's revivals post Deepground, a meteor crashes upon the ruins of Midgar, destroying it utterly. Out of the rubble climbs another of Jenova's kind... a new Calamity From the Sky. They are coming, they are all coming...