All of Nidalee's particles are invisible, her spear simply don't exist after she has launched them. Auto attacks are the same as well as her heal and swipe particles... Basically anything the isn't attached to the character model is impossible to see.
Client side issue, patch your LoL Client to fix the problem.
Yeah was there when this happened to him in ranked.
https://www.youtube.com/watch?v=s3R3XiEoq7A&feature=youtu.be
She needs the nerf stick
This is happening with multiple champions.
Most notably 
I also have this issue, but with her newest New Year skin or whatever it was.
I've noticed the spears Particles to show, but not the actual spear itself. And I have only noticed it when the Nidalee utilizes Fog of War, or shot from unwarded brush.
I have had many a game where people on team are complaining about not being able to see her spears. Your hit from a blind spot and have no clue where it came from.
A few games ago I saw the thrown spear effect, but not the spear itself.
: (going mid lane from jg)
: (farming)
: (shoots a spear from unwarded place)
: (dies)- WTF just happen?
: it's not that im not good, it's the too good
spear can take down half of a champion's bar even w/ MR
Umm no, I am a nidalee main and all of her particles are very easy to see. Even when I play against her it is easy to dodge. Some people are just bad. Apparently you are one of these bad players...
I saw this happen yesterday with Lux's singularity bombs. Luckily the player wasnt all that good, but how do you dodge the second explosion when you cant see the projectile or the corresponding AoE area. It sounds like several of you are tying this to the new DJ Sona skin, which I cant disprove.
All of Nidalee's particles are invisible, her spear simply don't exist after she has launched them. Auto attacks are the same as well as her heal and swipe particles... Basically anything the isn't attached to the character model is impossible to see.
I have also had the same problem but its only in a few games the last 2/3 times ive seen a nidalee she has invisible spears
For all I care they can disable her just because of her overpowered, overloaded kit and her playstyle of dodge a spear and live or get hit and die.
she just needs to be bugfixed a bunch. I've also had her spears dissapear in my games too. They don't even hit anything, just cease to exist.
