Facing the twin threats of the Drune Lords with their twisted Sour magic blighting the Land of the Young and invasions of Fomorian sea demons intent on enslaving mankind, the tribes of the Earth Goddess, Danu, are by necessity fearsome warriors.
Comprising many different tribes such as The Growling Shields, Tribe of the Shadows and the savage Sessair, the Earth Tribes often fight amongst themselves for dominance but are ultimately united in their devotion to Danu. Among the Sessair are a sect of warriors capable of undergoing a warp-spasm – a mystical battle frenzy allowing them to channel the power of the earth through their body and turning them into berserk, raging beasts, feeling almost impervious to wounds.
—description from the publisher