The Heraclitus Effect

Fresh from his humiliation at the hands of Ultramarines Captain Uriel Ventris, Warsmith Honsou of the Iron Warriors takes the first steps on his road to revenge against Ventris and his brother Ultramarines. Gathering his allies – renegade Space Marines, a traitorous magos of the Adeptus Mechanicus and a sinister clone of Ventris himself – Honsou engineers the destruction of an entire world...