Title: The Diamond Throne - David Eddings - book
Summary :
Emouchet, the Pandion knight, is back from exile, ready to resume his place as the Queen's Champion. But his mistress is struck by a mysterious illness and Séphrinia, the old witch, has only been able to delay the deadline: sitting on her throne, encased in a block of crystal, the young queen is dying; a cure must be found quickly. This story takes place in a land of warring kingdoms, court intrigue, black magic, and high adventure. The queen's illness is a boon for the ambitious. So, Emouchet sets out to find the cure in the company of Séphrinia and the little Flute with strange powers. After many wild gallops and daring crossings, he cannot fail to finally reach this constantly elusive goal... But the Zemochs, for the first time in five hundred years, are at the gates of Elenia. It is whispered that Azash, their elder god, covets Bhelliom, the lost sacred stone that would make him master of the world. Against such a threat, what can sword blows do? Come now, darkness lurks, the dying queen may be—unbeknownst to all—the last hope for light. And the valiant Emouchet is not at the end of his troubles.