Citadel of Fire - kindle ebook by Matthew Wolf

http://www.amazon.com/Citadel-Fire-Ronin-Saga-Book-ebook/dp/B00MQ5BIAS

Magic. Death. Hope. Legendary warriors with elemental powers come to life in this stirring sequel to the Amazon bestselling fantasy saga. KIRKUS REVIEWS calls Citadel of Fire a "richly detailed, complex fantasy universe populated by intriguing characters who will continually surprise readers throughout the briskly paced tale."  What can one young boy do against an evil that can't be killed?  With his intrepid friends, Gray must find a way or the tide of darkness will consume the world of magic and all he knows.