Blitzcrank suggesstion.
instead of rocket grab name his Q death grab. seriously. I got 3 full mejais in 2 days with this guy and playing against him in bot lane is one of the worst things that happen to u in league. unless your tristana/ezreal/sivir or have some sort of a dash. one grab and your dead. even then blitz grab is much faster and unpredictable unlike thresh grab. the only way that shit grabs anyone because of the giant ass hitbox it has. the Q E combo plus thunderlords is almost half your health early game. once he gets his ult its even worse. at that point the adc has to auto you twice and you are gone. for its utility.
i mean there is not much i can do about a flashing grabbing blitzcrank