Land of Ashes: Age of Cataclysm Book 1

Krivkris unsheathes Fuulnok and assumes his fighting stance. "Fahuul." Flame spirals weave around each other from the hilt to the tip before fire engulfs the entire blade. "You honestly believe you'll capture me with that spell."
Ashereth repeats the steps for Ičtani. "Ičalkdi." The light blue fades to a darker shade, and six bright dots with multiple tinier dots appear on the blade, mimicking the twilight sky. "I will save you, friend."

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A quest is on the edge of failure. After obtaining a magical artifact with a vile power deep within a dungeon, a Dragonkin named Krikvris and his companions is on the run from forces of an ancient enemy yearning to return to wreak havoc and bathe the known world in ash. The landscape is against them, and their supplies are running dry. That's not all that oppose their quest. Unknown habitants desire their bodies as a sacrifice to their god. The artifact seeks to corrupt one of the party members and tempt it to join its master's ranks instead of destroying it. And a dragon that believes that they're after its treasure horde. As they attempt to survive the odds, they discover signs from an ancient civilization that their enemy may not be the greatest threat the world will face.