Everyone says ornn is OP.
Yes, he does do a lot of damage, yes he has a lot of cc, yes he builds only tank, and yet his winrate is still below 50% according to op.gg.
Maybe Ornn isn't OP, he just seems OP because the things he is strong at doing are very clear and obvious, but he isn't actually that good at the things that win games, such as being reliable at engaging or having point and click abilities (maokai).
But his w is pretty bullshit tbh. Really it should have 25 less range and deal less % damage in favour of some flat damage. My idea is 8-12% max hp damage plus 110/140/170/200/230 base damage. It would even be good if he had an ap ratio added, like 0.3 ap ratio for those hardcore AP ornn players.