Change to Mesmer?

Is there another ghost somewhere in the desert that has a quest to change your secondary profession to Mesmer. I have been to Heroes Audience and Seeker's Passage, and done all of the secondary quests there, but all I've gotten is Ele, Monk, and Necro.

Sorry if this was asked anywhere else, I did a search but didn't find anything.

The last two are in Destiny's Gorge, Northeast of Augry Rock.

EDIT: Dug up a map.

Thank you. I knew that it had to be somewhere. Now the question is do I have destiny's Gorge on my map yet or not. :\