They don't have full-fledged magic. In WGE, they don't have chain lightning, speed, or slow spells. In fact, only one of the three types casts spells, with primitive spells like evasion and general exorcism. After increasing their mana, teleport and berserk become available. Any of these spells can be reduced to tricks and gimmicks. None of them depend on witchcraft, and this is very important.
Even though I don't particularly like this universe and have many questions about it, including what you mentioned above, you should really move on to a new universe and stop clinging to these paradoxes, especially since you're already selectively leaving Askhan behind, huh.