New Idea:Necromancer As NPC For Aberoth-
        First you meet/find a mysterious NPC dwelling in a cave, etc. He claims to be a good guy with good
intentions.He then asks you to do some tasks for him(quests).

Unfortunately, as you arrive from your last quest to his dwelling and you turn in your last quest for him, he reveals he is an evil necromancer with sinister intentions.He then explains who he really is,etc.Then he turns unfriendly and summons a bunch of skeleton -based foes,(such as, skeleton wolves, Skaldor, skeletons,etc.) When you attack his minions, he loses defense ,attack,hitpoints,etc.Basically, his minions are his life force,(you attack them, the necromancer gets weaker.)When you attack all of his minions, he will attack you.During your attacks on this necromancer, you find out he is over-powerful.Since, you attacked all his minions, he is now weakened. After you have  finally defeated the necromancer, he drops a lot of high, mid, and low tier loot. Like all usual foes, he replies to you killing him.For example, Rogues/Ratingar/Thieves make remarks when they are defeated by you , like:"My death will be avenged!"
Note: The picture shows what a necromancer would probably look like in Aberoth.Bibliography:http://piq.codeus.net/static/media/userpics/piq_52082_400x400.png
Also, the necromancer could be wearing a casting sash instead of the belt he is wearing now.
See http://bookofaberoth.wikia.com/wiki/Casting_Sash for more information on casting sashes.