Dragon Masters 17 Fortress of the Stone Dragon

Not all of the wizards who were freed from Maldred’s time-trap were good wizards; one of them, Astrid, is planning on working a spell that will bring to life the bones that lie scattered in the Fortress of the Stone Dragon, bones that belonged to creatures much bigger than dragons–and when his friends are turned to stone it is up to Drake to find a way to save them, including his own dragon, Worm.