All good stories come to an end and the Arks of Omen saga is no exception. In this final book, Arks of Omen: The Lion sees Vashtorr the Arkifane begin his ritual as the Dark Angels and Lion El'Jonson, otherwise known as The Lion, are on a path of revenge against Vashtorr. 

Included in this book is the narrative plot for Arks of Omen, Boarding Actions rules, faction rules for Leagues of Votann, Imperial Agents, Thousand Sons, & Adeptus Custodes and several new Breaching Operation Missions.