[@Cu Chulainn] I don't think that's particularly one which would be a Specialist as a class. Because Specialists as a class is more for those who have difficulty controlling their aspect/mutation. If they're not really having trouble with it at all or it's not their primary way of fighting then they'd belong to the other classes more or less. I'm not entirely sure what you mean about the 'inverse' of a mutation though. If you mean they're incorruptible then that's fine, but if you mean something like they can reverse a mutation... I think that's likely not fine. But if it's not that then it's probably ok.