Books like Sword in the Storm

Fierce and proud, the Rigante dwell deep in the green mountain lands, worshiping the gods of air and water, and the spirits of the earth.  Among them lives a warrior who bears the mark of fate. Born of the storm that slew his father, he is Connavar, and tales of his courage spread like wildfire. The Seidh--a magical race as old as time--take note of the young warrior and cast a malignant shadow across his life. For soon a merciless army will cross the water, destroying forever the timeless rhythms of life among the Rigante.Swearing to protect his people, Connavar embarks on a quest that will take him into the heart of the enemy. Along the way, he receives a gift: a sword as powerful and deadly as the Seidh who forged it. Thus he receives a name that will strike fear into the hearts of friend and foe alike--a name proclaiming a glorious and bitter destiny . . . Demonblade.