The battle that was promised is here. We dive back into a 30k Horus Heresy battle and play an iconic battle of the Great Civil war between the forces of the Emperor and the forces of the War master. Early in the events of the Horus Heresy, The Emperor Commanded Leman Russ to bring Magnus the Red to him. The orders were intercepted and re-transmitted as destroy the Thousand Sons on their Homeworld of Prospero. A desperate brutal fight ensued that saw the Space Wolves weakened and the Thousand Sons sided with the traitors in the Horus Heresy.