Necromancer (Quest Nemesis)
The Necromancer is a fairly simple quest nemesis. He is classified as a wraith, and is one of the few "non-standard" monsters to hate silver. Silver arrows work well for elven rangers, but he isn't particularly hard for priests, nobles, or wizards either. You'll want drain resistance (preferably) or a blindfold, as his life-draining gaze can quickly lower your level. Keep in mind he also has the ability to drain you with spells, so a blindfold will not fully replace drain resistance.