How do you deal with Jayce?
(I personally think Jayce has a bit too much in his kit, but that might just be me)
I'm trying not to turn this into another "QQ Rito nerf plz" thread, but I honestly can't think of reliable counterplay to Jayce, unless you have really strong double-layered initiation or super strong 100-0 potential with sticking power and high out-play potential (ie. LeBlanc, Zed, Fizz). He has very strong poke (that's also AoE and pretty hard to dodge given it goes faster, deals more damage, and has a larger AoE through the acceleration gate), also has tank stats on his melee form, a strong gap-closer to initiate on you, as well as %HP self-peel. Basically it's hard to fight him at range since he's known for his poke, and it's hard to fight him at melee range since he's got a very strong kit for that as well.