My Jhin theory
I think that each of the teasers, in order (zed, sona, garen, and vi) represent abilities ( q, w,e, and r). So when there being vines and flowers and zed being shot in the eye, maybe jhins q is a root or blind or both. With sona being shot in the throat then his w would be a silence ( this is why I think his q is a root because I don't think that he would have a blind and a silence). His e is probably an armor pen, because he goes strait through garentee armor. His ultimate being a huge disable in a team fight because of vi's arms falling off. I think his passive will be similar to kindred's, I think he collects the souls of people he kills ( because you can kind of see everyone's soul leaving their body). Tell me what you think in the comments!