Anne Forbes 
Dragon Seeker [EPUB ebook] 

A powerful magician. A magic sword. And a valley full of dragons … Evil magician Lord Jezail has unearthed the terrible sword, Dragonslayer, from the depths of Edinburgh Castle, where it has lain buried for centuries. But the sword has its own agenda — to seek out and slay dragons. Ensnared by its magic, Lord Jezail sets out to kill Arthur, the wonderful red dragon who lives under Arthur’s Seat, and attack the fabled Valley of the Dragons. As the World of Magic finds itself on the brink of war, human children Neil and Clara join forces with witches, wolf people and magicians to stop Lord Jezail, the Dragon Seeker. Can friends and enemies unite to save their world from destruction?