Illaoi so OP

I don't normally post, but I can't help at find Illaoi is too strong. Top lane she dominates, I've seen her dominate mid and bottom as well. I've seen her tank towers alone and with enough life and attack damage to succeed. She has strong ranged attacks and its suicide to get close. Her tentacles attach to your tower so defending under it is ridiculous. If she uses Test of Spirit your forced to run into her close range to defend but wait, tentacles are waiting to massacre you. If you run away your still stuck with Vessel and have to deal with that for far too long, and once again those tentacles do way too much damage. What can't she do? I'm sure there are some champs that may shut her down, if so they are too few or logistically not worth picking. I am no LOL expert by any means, I've played for years and am used to dealing with champions that are OP to some degree, its part of the game and I move on. I think this particular champion needs to be fixed sooner rather than later. I just hope Riot sees this in their internal testing or at least look at it. I'll be ridiculously surprised if they do this research and don't nerf her in some way.