Complex sentence: Elder Rider Oromis and his Dragon Glaedr fled to Ellesmera, the capital of the forest Du Weldenvarden, while Morzan confronted his old friend Brom, slaying his Dragon.
Split into simpler sentences: Elder Rider Oromis and his Dragon Glaedr flee to Ellesmera, the capital of the forest Du Weldenvarden. Morzan confronts his old friend Brom, slaying his Dragon.