Glacial Augment is in my opinion one of the best choice for Nidalee, when we play 1 x 1 matchup. Nidalee is a ranged champion, so the effect of the slow is little lower, but we can poke enemy champions so easy with that rune. I recommend to use this rune for ad or hybrid build for pvp matchups. The 2s slow stack up to 40% when we are in the Human or 55% if we are in the Panthera mode.
Usually magical Footwear will be to late, so in many times the matchup will end with First blood, but if you gonna play to the destroy the Nexus is really good choice. This item is good for Nidalee, because she is chasing champion, compare with panthera mode in the bush you get another bonus speed. Really OP!
Biscuit Delivery - is the best choice, because it give sustain for early levels. If you play matchup, where you can't recall to base with that mastery you can win long fight and secure the first blood!
Time warp tonic - this mastery goes good with previous biscuits. We can use this mastery much often and it gives 50% mana and health immediately. Another 5% speed sounds good with your upgraded boots. Good mastery to counter ignite, which is really often pick by enemy.
Legend: Bloodline - this mastery is good for another sustain. We will get 0,6% life steal for every large minion kill or champion takedown, when we play longer no for first blood mode.
Coup De Grace - It's really good mastery for punish opponents after making dmg with Q in Panthere mode. We will get additional 8% dmg, when target is below 40% hp.
I recommend to play with doran blade, because on early levels additional hp can safe us from the death, when oppoents try to kill us with ignite and of course we get some life steal to get more sustain on the lane.
This build is early AD and AP in late game. Hybrid Build is good for Nidalee. We get more healing from the AP, better sustain in late game. Early AD gives us better opportunity to poke enemy champion. With Glacial Augment we can easy trade with other champions, because they can just go near us. If even they will try, we can allways change mode to panthera and run away safe. believe me this is pretty op build.