Primus Eidolon is a man of many names, the Exemplar and the Risen, the Soul-Severed, and the Auric Hammer. He has suffered many indignities and many triumphs, and even now carves a path to Terra where the final battle of the Heresy awaits. A mind-twisting entity in the Warp has different plans for him though, and Eidolon is stranded on Tatricala, where spectres of his past haunt him, and his future rests on a knife edge – only the Auric Hammer can choose his fate, and how much of his soul he is willing to sacrifice. Eidolon: The Auric Hammer by Marc Collins is a new novel set during the Horus Heresy.