Iksar Necromancer.
You have access to the skullcap questline, which can be a fun distraction from leveling. You are just gear-dependent enough to give you goals and interesting choices (focus on hp vs mana? unlike mage/wiz) but not enough that you would feel underpowered without twinking. You can get into places you shouldn't be with invis/FD, skeleton form means you can sell in many more cities than iksar would normally allow.
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