Druids and Necromancers are both low-stress classes that solo well once you get to a certain point. That being said they do have their weaknesses--nothing's perfect, after all.
Druids are wretched prior to level 8 and feel pretty mediocre until they reach a level where they can quad (35 or so). Charm-killing is available much earlier but goes against the notion of "low stress." Root-dot-nuke is viable but slow and boring. I don't know about Necromancers in terms of function, but they innately come with the hassle of having to acquire research spells.
Danth
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