illaoi´s E just seems so flawed to me

not sure if that´s the correct word but I´ll go with it, the ability seems flawed because it lacks counterplay and has not enough interaction, I´ll try and explain why

early on her E isn´t that big of a problem compared to late game, because late game or mid game when she E´s you I often wonder ´´what am I supposed to do now?´´

I feel punished if I stay in range and I feel punished if I leave the range.

if I stay in range I take a ton of damage and most likely be made a vessel which will damage me/my team even more and with how E works this makes it even worse(more about this below)

if I leave the range I get made a vessel which as it stands is a very troublesome to deal with

so what happens if you're a vessel? tentacles spawn close to you and attack you once, so once it attacked surely you want to kill it, but then your team kills it so you cannot reduce the tentacles stack on your debuf, and this is where another of her problems pop-up, as an ally you're screwed if you don't destroy the tentacles and you're screwed if you do destoy them, why? simple

if you destroy a tentacle it means the vessel didn't so they will keep spawning tentecles, so obviously the solution is to not kill them, but then there's the danger of illaoi making use of that and possibly dealing over more damage to you, this is what I find flawed about her E, no matter what you do, you will always get punished

illaois thematic and name of her E implies it is a test, but how can it be a test if no mater what you do you will fail either way? the only way to counter her E is to attack her which brings us to another problem with her

if she is ahead and with the team mid/late game there is nothing you can do about her E because you don't want to foolishly or randomly engage on a enemy that is stronger then you

however if she is behind E loses it's strength as you can simply scare her away or just engage on her as she and her team most likely lack the power.

I apologize if this seems poorly worded, I have trouble with making myself clear and using the right words, I'm also not a good player so this could just be my lack of skill perceiving it this way