Merlin and the Land of Mists Book One: the Dark Lord

The Dark Lord has sent his fearsome Blood Riders and a fire-breathing dragon to destroy the whole of Camelot and Avalon and neither Uther Pendragon, the King of Camelot, nor Galapas, its High Mage, can stand against these Dark Magic driven forces. But there is one who carries the Old Magic with him, the only problem is that he is only eleven years old and has never even seen a dragon let alone confronted one. He is the Raven Boy, for that is the name that the ravens know him by, but to the world he is Merlin and he is the son of Mithras Invictus the greatest and most powerful of the Elder gods. The Blood Riders are burning and slaughtering all before them and Merlin knows that he must summon the Old Magic and the magical talking beasts of Avalon to save Camelot from being totally and completely destroyed by the Forces of the Dark.