Soothsayers?

[Lancian]

Originally Posted by Karlos

And even though the soothsayers' heal ability is crap and the blizzard just average, they are surprisingly good even as a single-purpose shooter unit, especially against ghosts and skeletons.

I found mages/beholders basic attack much more stronger reliable when fighting resistant unit types, I also dropped them because they lowered morale of my elves.