Moderated: USE OF OFFENSIVE LANGUAGE in the message
As far as I know, Barbarians cannot be given magic (unless you give them a different class)
It is even said that this cannot be done using an .exe file. Although, maybe I'm just wrong?
"No, it is unlikely that you will be able to use the eighth class, because the inability to use magic for the Barbarian is embedded at the class level, and this does not suit us."
So, yes, give them a different class. 2 classes out of 7, just like all other castles. Warrior and Wanderer. Read the previous discussion.