This thread about Necro/Shaman Charm (and specifically, the comment about NPCs charming) reminded me of a long standing "not classic" thing I've (effectively) trained myself to ignore here over the years: NPC spells.
NPC casters on P99 do not use the same spell lists as live mobs did. Before I got used to it I remember being shocked by some of the things NPCs cast on me when I first started playing here. I could submit evidence, but this has
got to be a long-known issue. As such, it probably is too hard to fix ... but I just wanted to mention it anyway in case there's any chance it can be fixed.