Theldren is not one to willingly participate in a fair fight.  I've shaped this banner to display his family colors.$B$BWith some additional sorcery, this banner shall provoke him in a way he won't be able to resist.$B$BAn old acquaintance of mine named Falrin knows the exact procedure required.  He has a particular way of... aggravating people.  You shall find him at the library in Dire Maul.