The Scorched Earth: (The Chaos Born 2) by Drew Karpyshyn
Beset on all sides by mortal and supernatural enemies, The Children of Fire - four mortals touched by the power of Chaos - are in search of the Talismans that can put a stop to an ancient enemy of the Gods.
But in doing so, they unleash a flood of Chaos magic on the land - leaving death, destruction and a vengeful queen in their wake...