i made this build using the most popular items/masteries/runes used on nidalee and put them together

MARKS magic pen to do more dmg duh?
SEALS vitality/hp per lvl to make more survivability and i found hp more use than just going armor cuz more hp has saved me more than more armor
GLYPHS shielding/mr per lvl to make u more survivable cuz ull be lacking alittle bit in mr than armor in build
QUINS movement speed cuz well too make u hard to catch and it will help u out run those ms buffers like garen/fiora etc etc

24/6 all ap masteries and with armor pen to help with your takedown and armor/m resist to make u more beefy

i know ur like Lich Bane and Trinity Force?
i got both cuz well Lich Bane gives u more ap with m resist and movement buff with the passive and Trinity Force cuz it gives alot of what u need to do more dmg and live longer and its a jack of all trades item

and i didnt show a build up item for Rabadon's Deathcap and Trinity Force to leave it up to u on how your doing like u have enough to go right to Needlessly Large Rod or Blasting Wand , what priority u need first like Phage or Zeal for Trinity Force cuz u should have Lich Bane before this so Sheen not needed at this point

max Javelin Toss / Takedown first to give u more spear molestation and to buff takedown it does more dmg less hp target has y not hit alittle harder
Primal Surge / Swipe second cuz it great at pushing/turret destroying/champ killing/team supporting all at the same time and gives Aspect Of The Cougar another aoe but in a cone
of course Aspect Of The Cougar cuz y wait when u get it at the designated lvls
Bushwhack / Pounce last ur not gonna be relying on it to get kills more used to see in brush and to escape with Aspect Of The Cougar

Flash to help u escape or get in a good position for a finishing spear throw getting u a kill
Ignite it does dmg reduces heal perfect for those life steal,heal,regen huggers and goes well with a spear throw that otherwise wouldnt of finished them off

Pros
good dmg
can go ap or ad
long range ability
good burst with Aspect Of The Cougar
Aspect Of The Cougar abilities doesnt cost mana
can heal and increase attack of her or others can save a life or give a kill
great escape with use of brush and Bushwhack / Pounce
can reveal ganks with traps
equal balance of long range abilities and close range abilities
Cons
Primal Surge / Swipe not the best heal but better than nothing
can be squishy
Javelin Toss / Takedown is a hit or a miss
sometimes focused
can tend to take getting used to

once u get Aspect Of The Cougar u can rly start to farm and jungle quickly and without worry of mana or energy and has 2 aoes to help u with groups and takedown to last hit faster and earlier