As one of our more unique and polarizing champions (due to her ability to run away with a lead) Nidalee's been out of the patch notes for some time. For 5.15, it's the same old song-and-dance - increase the risk she has to take on to succeed with her aggressive assassination patterns. Tossing massive Javelins and stalking the weak is most certainly a hallmark of Nidalee's playstyle, but the number of tools she has to choose her engagements leaves her opponents without much of a say. These changes continue to pressure Nidalee to really commit with cougar-form takedowns, instead of constantly fishing with poke from afar. They also open up more ability to evade Nidalee’s attempts to continue the hunt once she’s got her eyes on you.
This was after they had nerfed her durability, that was the patch notes from when they nerfed her casting time and base damage on her spear and cut the vision given by traps to a third of it's radius in I think it was 5.15. Looks like a ton of people are going to be jumping in on nid with their myriad of ways to catch a target, like landing a spear that has been nerfed in every way imaginable repeatedly, i.e. without boots you can sidestep the thing, or having someone walk into a trap due to their own stupidity which may I add does no damage so jumping in after that with cougar will just get you killed(yay lower durability), better pray the enemy has used all of their cc and mobility spells, is completely alone and isn't near anything that can block a spear and does basically no damage, or jumping in gets you outright killed 9/10 times oh and don't forget how she's basically forced to jungle now because they've completely nuked almost any possible way to lane as her anymore(strategic diversity ftw), let's make it even easier to deal with nid but leave thresh/lee/vayne with love taps or even buffs.
They're basically doing the same thing to eve, "insert completely flawed PR statement here", and that's why we decided to nerf eve, because with her average winrate, no complaints about her, and her ability to actually still impact a game as someone that isn't thresh or lee sin is too polarizing, therefore, more mana costs, woo balance. buzzword buzzword buzzword