Books like Storm Dragon

An epic tale of madness and magic!A war hero, his mind broken by the wonders he witnessed on his last mission for his nation, has spent years in the deepest, darkest prison in all the world. Wallowing in despair and ever on the verge of madness, he is caught by surprise when a band of strangers breaks him out. But his rescuers don't exactly have his best interests at heart. The magic relic that broke his once-brilliant mind may be the key to stopping worldwide destruction--and whether he lives or dies really doesn't concern them. Thus begins an adventure that will shake the fragile peace of the Five Nations and once again stoke the fires of war across the world of Eberron.