ever ones to squander their ranks in bloody attrition, the Thousand Sons Legion employed unliving battle-automata as obedient, resilient, and ultimately expendable shock assault units. As with every other facet of warfare, the Legion believed their psychic arts could improve upon these robotic weapons – and with the secret assistance of their allies in the Forge World of Zhao-Arkhad, the sons of Magnus created the Castellax-Achea. Rather than the cybernetic brains or cognis-wafer blocks employed by standard automata, the Castellax-Achea was governed by a psi-sensitive crystal matrix – an