The skill provided by purging wands has changed, presumably because people could get way too many source points. Source pools were also removed. Right now, the only way to get source points is to absorb them from soul jars.
so, it means that 4 chars could get only 4-6 points atm?
I could only find 6 (or less, I guess?) soul jars in hidden cavern near Seekers camp
2 of them I have to spend for opening Braccus armory and blue shield :-\
nothing to use left, including useless spells