Xin Zhao doesn't require any skill.
I played Xin for the first time yesterday and got 24/9 I played him today, I was afk for the first 10 mins cuz my laptop crashed and i got like 14/9
AD Champ with lifesteal, knockup, slow, stun, etc, he's just so annoying to play against lol. My champion pool is huge and I like to play a variety of different champions, and it's not usual that I'd carry on my first time with a champ.
Don't get me wrong, he's fun to play lol, but when you have a champ like him... then you have a champ like Galio... it's obvi there's unbalance