Battletome: Chaos Dreadhold is a full colour, 80-page hardback book that contains the background story of the monstrous castles, mighty strongholds and looming watchtowers that choke the Mortal Realms like an iron collar, rules for each of the Chaos Dreadhold scenery pieces, several Battleplans (instructions that allow you to fight battles based around their narrative, with special rules and layouts), and eight Warscroll Battalions (formations that give access to additional, powerful abilities).