the new CDR boots or, speed 3 boots are nice too.
at lvl 17-18, sell Doran's ring

Items

1.
Doran's ring

2. Well try to get Guinsoo Rageblade - the core item for nidalee, with 8 stacks of AP.
If are low of gold, we can take lvl1 350g boots 1st.

3.
Your choice of boots. I Often take ninja tabi, or boots of switness, but new CDR boots are very very nice for nidalee too.

4.-
Lets take sheen, we'll upgrade later
5.-
If are getting lot physical of dmg, well go for glacial shroud, armor with CDR, nice...

6.-
Time to get Stinger, faster attack, faster lvlup, and more CDR.

7.-
Time to upgrade sheen to lick bane

8.-
Atmas impaler, or any AP item of your choose

9.- Upgrade Glacial to Frozen Heart

10 .- well upgrade stinger to nashor

Lichbane - This is another core item for Nidalee, better than trinity force and cheaper. This is what gives you immense burst. Don't go wasting the proc on a minion if an enemy is in range.

5. Zhonyas ring Or Rylais Crystal Scepter or Mejais Soulstealer- Zhonyas if you are not having HP issues. Rylais if you need that extra HP (always nice to slow off a javelin). Mejais if you or your team fuxd up and your unable to carry and you have a competent team, this will help you fit more into not only a burst carry role, but also fit as support. If you and your team played right your game should be near over by this item.

6. An item you did not get from step 5