You must find one amongst the wretch in the lower portion of this citadel that has attained an Unadorned Seal of Ascension. It is a great honor for one of the lesser beings to obtain this item, as it is the first step in gaining access to the upper citadel and becoming one of Nefarian's elite guardsmen - the Blackhand legion. Find such an item and return it to me so that I may examine its properties. I will know how to proceed once my inspection of the seal is complete.