A full colour, 144-page hardback book, Battletome: Seraphon contains:

the compelling story of the seraphon - who are they, where have they come from, and for whom do they fight?
Three Battleplans - instructions that allow you to fight battles based around the exciting narrative leading up to them, with special rules and layouts;
Warscrolls for the entire seraphon range of miniatures;
Colour schemes and incredible photography showing off the colourful nature of the seraphon;
Six Warscroll Battalions - organise your miniatures into these formations for access to additional, powerful abilities;
And, of course, the complete ruleset for Warhammer Age of Sigmar - play games right away!