League of Legends (LoL) Question: Who is the worst champion to play against illaoi

Hello everyone!!! A toxic player wants to 1v1 me against my illaoi and i get to pick any champion i want to fight against.so out of all the champi
ons in league who just doesnt stand a chance? I just want to prove a point so i was thinking of a support champ or anyone that cant fight alone. Please help me with a champion and maybe a build to counter even more?