Hi there. I've been playing Zed almost since his initial release 4-5 years ago, he's been through a lot of changes and is in a great state at the moment, well balanced. Let me explain why you're wrong. His laning phase is actually weak against 90% match ups, Any mage with point n click spell,yasuo,talon are very hard to deal with in lane, cause you will just be poked out of lane easily, they only way to retaliate is if you land your combo (W,E,Q) if you miss it, you lose the trade,and likely the lane. Yes he does have W that has 18 sec cooldown on lower ranks,think about that, it's his only engage and escape tool. Every champ when fed will oneshoot,especially an assassin who's meant to have high burst. As i've seen some people already mentioned that Zed can be predictable it is somewhat true, depends on the experience of the Zed player and the person facing him. Both of his shadows (W and R) are static and can't move which gives you an idea where he could go next. I've had my ass beaten by mages many times so it's not impossible. And finally, just because you find it difficult to play against this champion doesn't make it broken or OP. Good luck on the Rift :)