Warhammer Age of Sigmar: Malign Sorcery

At the start of the War of Souls, the cataclysm known as Necro-Seism, unleashed by Nagash, swept through the Mortal Kingdoms, flooding the ether with immeasurable power. Incantations were imbued with an unprecedented and terrifying force, coming to life with a conscience of their own. Beware, though, as these persistent spells, once invoked, can just as easily turn against their creator as devastate enemy ranks.