Cult of the Starchosen
Born upon the agri-world of Cornucopia, a splinter fleet of the shattered Hive Fleet Behemoth triggered their rise. However, the Ultramarines 8th Company put down the insurrection at great cost. Planetary Governor Udo Ingloriam sent a cargo ship full of brand new Goliath trucks to Masali, Cornucopia’s twin agri-world within the borders of Ultramar. Only after the vehicles are found to be full of Genestealers, sealed within antique stasis caskets to prevent detection, was Ingloriam’s treachery uncovered. The 8th Company returned to Cornucopia. This time, it was all but destroyed, for the Starchosen had grown strong indeed. On the orders of Chapter Master Calgar himself, the planet was designated Perdita and subjected to Exterminatus.