Warhammer 40K Arks of the Omen The Lion

128-page hardback narrative expansion for Warhammer 40,000 that concludes the Arks of Omen story - Contains 18x new Boarding Actions missions, as well as Boarding Actions rules for four factions including: Leagues of Votann, Thousand Sons, Adeptus Custodes, and Agents of The Imperium - Details the return of a Loyalist Primarch and contains 8x Datasheets including rules for Lion El'Jonson, Commander Dante, and the Adeptus Arbites in game