Age Of Sigmar: Core BookThis is the time of turmoil. This is the era of war. This is the Age of Sigmar! Since the breaking of Sigmar's Tempest, the peoples of the Mortal Realms have fought tooth and nail for those islands of civilisation they have established. Every city is blackened by the fires of war, every populace harrowed by the ordeal of simple survival. But now, the Hour of Ruin has come, the fabric of reality splitting as numberless hordes of rat like Skaven capsize