Cri + 10, every 2 levels of Sky Mastery user learned, increases physical damage against all race monsters (except players) by 1%.
When equipped with Star Emperor Stone (Upper), every 2 levels of War Book Mastery user learned, Cri + 1, C.Rate + 1.
When equipped with Star Emperor Stone (Middle), increases Noon Blast damage by 10%.
When equipped with Star Emperor Stone (Lower), increases Sunset Blast damage by 15%.