Xerath is poorly designed and is toxic to play against
He has high poke and barrier in lane, he's Lulu 2.0 in lane except with even more kite.
His counterplay should be jumping on his face and stomping his ass in a duel.
All you get instead is stun/slow and he barriers away and enemy jungler knocks you up for 500 hp.
This is poor design.
He's overloaded and the only way Rito found to balance his was to nerf all the numbers in his kit at the same time.
Stop overloading champs and maybe make his kit have clear strengths and weakness.