A really good start, I must say. I like the overall tone of the story - it is very current with things like Game of Thrones. Your vocabulary is awesome as your descriptiveness and overall world building is something I really like. The characters are well defined so far and I really want to read the next chapter!
One thing though is I feel is a lot of character names are mentioned and the reader may feel a bit lost however this is a really small detail and with future chapters can be resolved.