Hi guys. I am not sure if this has been covered before but i am wondering what your opinion on this issue is. If i miscast and lose all my wizard levels but still have spells remaining am i allowed to cast them still, just without a bonus to cast? Or because i am level 0 and therefore no longer a wizard can i not cast at all?
No, the wizard can no longer cast spells as per the BRB FAQ: Interestingly enough he still counts as a wizard (but can't cast spells):