Not Updated For Current Season
This build is primarily used to be a huge support/nuke character. If you can get your spears to hit at max range you can nearly one-shot any squishy on the opposing team. Primal Surge when fully built will heal for around 1000 which is extremely helpful.
Early Game Strat
I usually try and get mid and place two bushwhacks on either side of the lane to make it thinner to enemies and one in each bush to protect from ganks. If you have to take a lane, place them all throughout the bushes, mana regen shouldn't be a problem while placing these. Last hit as much as you can using the spear to clinch the siege vehicles.
After getting Tear of the Goddess you should try and spend as much time in cougar form as you can since you require no mana and can easily build it up. Try and sneak from the sides of unsuspecting enemies to get a huge spear shot and make them back frequently so you can farm minions unmatched.
By late game if you have managed to successfully play Nidalee, you should be feared by most of the enemy team and may be their first target. Always try to stay in the jungle and throw spears to scare them back so you can push towers hard. If you're lucky you may find yourself hitting an enemy for 1300-1500 and making them cry at you in all chat.
Thanks for using this guide!
I picked up Nidalee not too long ago and I really loved her because of the spear and I've been doing very well with this build. I hope this helps anyone who has been trying to use Nidalee and I wish you the best of luck.