This is some really nice art. I love this provocative dark stuff like this. It really shows the cooler side of league of legends champs. Although i am not sure if it is a painting or digital art.
I love the way you shade. I see you took some artistic liberties here and there (namely you gave her skin much more color than she normally has and gave her larger breasts), but I can forgive that due to how flawlessly you shaded her midsection. The stomach, belly button, and upper pelvis area there are all done so photorealistically. It's very very impressive!