This was fun to draw, regardless of it being a challenge.
On Redbubble: http://www.redbubble.com/people/isapphirus/works/21823004-lunaala?p=t-shirt&style=mens
I find (Rumored name for now, Lunaala) to be quite a WHOLE new concept in design I never seen before on another Pokemon or creature in the world of anime. The Sun's legend design I seen similar too, especially in digimon/powerangers etc.
I admire this legendary because it's completely unique and awesome for a design and my fav new legendary, goodthing I was getting moon anyway. Can't want to see it's typing. My first guess would be Dark/Psychic.