What's the skill ?

AMD Phenom II X4 955 3.20 GHz (Quad-core)
4 GB RAM
NVIDIA GeForce GTX 460

I play on Highest without a slightest problem except for these sorcs in core -.-

@ps: Yes I did.

edit: but whatever, I can live with that. It just annoys me when I want to kill an Ely and then I notice that he's already being attacked by "Necklace" (don't like grouping on people unless the Asmo attacking is dying). Never mind, as long as there aren't invisible Ely sorcs...

EDIT N2:
Okay, I came up with some interesting conclusion. I noticed an invisible Cleric there which led me to this conclusion: All the invisible people are from the same Legion, which most likely means they have some wierd symbol that for some reason doesn't load up for me and that's why I can't see their chars. (Couldn't come up with any better reason I can't see them)