The Via-shaal are ghostly creatures with great hands of delicate fingers, small stature and a face resembling the one they had in live. Whether they were studied doctors, or simple medics, even nurses, all share such a deep desperation few Living can grasp. All their life they tried to help the Living, curing them and tending to their wounds… until at some point, they cannot anymore. Whether it is a war or a plague, their patients keep dying, and however they try, they cannot hinder it. They cannot rest, and at some point, overcome by desperation and weariness, they expire of their weariness. Days later, they rise.
A Lost Healer will never harm a living creature. But in their madness they try to cure any dead creature around, and they restore it with their cunning fingers, whatever their wounds… making it Undead.
Lost Healers are thus accompanied by many Undead, people of all sorts, even animals, that are of course aggressive against the Living. And if a battle erupts, the Healer will desperately run around, beg his way through to any "wounded" or (again) dead, and return them to unlife with unnatural speed. Helping as he can, a single Healer can be a true plague of the land.
To delay a Via-shaal, one can put fine medical instruments into his reach, these he will try to use, but fail as it is immaterial. It cannot be truly parleyed with, as it is not longer reasonable, and sees the world in different way. But if it is hindered to help its patients, blocked by holy symbols and other utilities, it just stop helplessly, and cry a single black tear. It is said that if a mortal touches the tear, he will die from desperation. Some Alchymists are willing to pay a fortune for such a tear.
A Healer never fights, and will try to evade any combat. There is a way of putting it to rest peacefully… it must be prevented from "helping" its patients, which have to be laid to rest in the usual way (killed and buried). Lastly, it must be buried in a proper ceremony, priest and all, with praises being sung on its abilities, and the many Living it has saved in life.