Nidalee is a really fun and unique champion to play

HOWEVER, she is honestly one of the worst champions in the game to play against for a few reasons.

1. The Human Q: I'm completely fine with how much her spear is able to do. It is a hard skillshot to land, anyone saying otherwise probably hasn't played much Nidalee and is falsely claiming she's a super easy champion. What I'm not okay with is the fact that it's on a 6 second cooldown, 3.6 if you're like myself and many others who max out cdr every game. The mana cost is kind of negligible as well, 90 for max rank? After I'm finally oom from chucking spears for 20 minutes late game, I only have to wait a couple seconds to regen enough for another with only a morellos for mana regen/mana items. Increase the cooldown, increase the mana cost. She's got an entire set of abilities that don't cost mana, she can afford to spend a bit more while in human form.

2. The Cougar W: No one enjoys infinite gap closers and low cd escapes, especially when hers is manaless. Honestly not much you can do here, and that on top of long range burst skillshot are kind of her identity as a champion, so I wouldn't change anything here.

3. The Human E: The rest of her kit makes it extremely hard to lane against considering she's got a reset, manaless form, long range, an execute, 2 minute wards that trigger your passive which is a 4 second "Haha you can't go near your minions without dying" mark. On top of that you give her a heal with a .5 ratio (pretty damn great for a heal) ensuring any damage you do whether early game or late doesn't stick. It's infuriating for such a slippery champion to have a heal, and on top of that it gives a huge attack speed buff for 7 seconds. That's an unnecessarily long time. My advice is to increase the heal's mana cost at early ranks, as of right now it's really not taxing enough not to spam, and lower the attack speed buff to 5 seconds, while increasing the base of the heal at all ranks so it's more impactful, yet less spammable at early ranks.

TL;DR: My suggested changes: Increase Human Q cooldown to 7 seconds from 6, increase mana cost to 60/70/80/90/100 from 50/60/70/80/90. Increase Human E mana cost at early ranks to 80/90/100/110/120 from 60/75/90/105/120, decrease the duration of attack speed slow to 5 seconds from 7, increase base of heal to 65/105/145/185/225 from 45/85/125/155/205 to compensate. This way it costs more to use it at early ranks, but the heal is more impactful. I'd also stagnate Human W's mana cost at 40 from 40/45/50/55/60 as a bit of compensation for the increased mana cost on Q. Overall these are nerfs, but I don't think they're too heavy and there's room to compensate her further if needed.