Where is Serpent's Quickness?

I searched the forum and couldn't find an answer.

Where can I buy this skill at?

http://www.guildwarsguru.com/content...rch-id1326.php

It can be bought from the skill trainer in LA.

"And remember kids, search is your friend"

Thanks grace! I searched but nothing came up. What did you do exactly to search for it, maybe I'm doing it wrong.

Thanks