Blood Magic — B.V. Larson

The Red Jewel is rediscovered and wielded in this, Book #5 of the series. Blood Magic reigns supreme, but who will master the Red Jewel first? The elder races gather, unhappy with the upstart humans and their possession of powerful Jewels. Brand leads an army of the River Folk and the Wee Folk to the Black Mountains to answer the request of the Kindred for aid. Enemy hosts march to face him. Fantastic forces are unleashed upon the world in a new war that will not be soon forgotten.

Blood Magic is the fifth book in this epic series of fantasy novels by B. V. Larson. At 81,000 words the fifth book is the longest of the series.