Despite healing with her tentacles, Illaoi has the 5th highest base hp/5 in the game
http://leagueoflegends.wikia.com/wiki/Health_regeneration
I know a lot of people have been complaining about playing against her. If at some point Rito sees fit to nerf her I figure that this would be a good starting point. She gets a strong amount of sustain from actually landing tentacles, but if the Illaoi player is trash and can't land them, her base hp regen being so high means she still has decent staying power in lane. Normally Rito gives champions bad base regen if they have strong sustain abilities, so it seems weird to me that hers is so high.
I'd also like to point out that at level 18 Ekko, an assassin with shields and a healing ultimate, for some unfathomable reason is tied for fourth highest.
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