Chaos Storm (The Flight of the Griffin Book 2) - CM Gray

The crystal skulls have been united in Sterling Temple to complete the great spell. The flow of the seasons has returned, bringing back a life of peace and plenty. This doesn't sit well with Matheus Hawk, who is busy plotting the Realm's destruction, fanning the burning coals of his hatred for the crew of The Griffin. An approaching storm threatens the Realm. In the north, the warrior Queen Morgasta prepares her barbarians for invasion, and across The Great Expanse marches an even greater threat: the Soul Eaters. And with them, the Chaos Storm.