Just thought I'd let everyone know this about Kayn
He might just be the most balanced champion I've ever seen on-release. In PBE he's maybe a little too weak early but I believe he picks up mid- and late-game. This is coming from someone who played both with and against one. He's not stupidly weak like Bard was, nor is he Camille-level overpowered. In case anyone was wondering.
(I won lane as Irelia top but also died to him in a 1v1; ended lane 3/1 with a gank from our Kayn.)
Edit: Forgot to mention, our Kayn was even with Warwick in farm, and theirs had better waveclear than me as Irelia, though he did end up dropping lower in cs when he died and later roamed once.