With the scrolls in hand, now you must set to the task of finding the staff.
When Aegwynn relinquished it many years ago, it was entrusted to Kirin Tor, who, fearing its unbridled power, handed it to the blue dragonflight to secure away from the hands of men. Only they would know exactly where it was taken, or how to retrieve it.
The dragon Kalec may be our best chance. He now resides upon the Council of Six in Dalaran. Seek him, and your answers, there.