Kind of a weird suggestion about bones and magic. I think you can make it so that their magic flow will only be hindered in the specific area where the bone is broken. So if their arm gets broken the magic can't flow there. Broken arm? Well you have another one to work with. Better start learning how to be ambidextrous!
In the case of using their own body to fight, they're playing with more risks of broken bones so their reinforcement magic or defense magic is generally better than those who like to do long range spells.
If someone uses magic to change appearances, breaking a bone in their body would either undo the spell entirely or undo the spell on that part of the body. You can confirm whether someone is committing identity theft but with the risk of hurting the suspect first, choose wisely.
It wouldn't be that big of a weakness for them, especially with healing magic but would give their enemy a specific target on their body.
This is assuming that they concentrate their magic on the part of the body that will cast it.
Like this there's a lot of building to consider though, like the nature of the spell, how the witches fight (long range? Short range? Do they shape shift and fight that way?), the character's personality (are they straightforward? Do they play mind games? How does it affect the fight?) Etc. fun stuff to think about XD
This got kinda long... Lol. sorry
ooo this is all interesting stuff to think about!!!! i do like the idea of magic unable to flow only in the part thats broken!! before i was thinking of it as "a broken bone disrupts magic flow everywhere once a bone is broken" but that seems like such a huge disadvantage that i would be too imbalanced in fights..
but yeah im still thinking about how it all works!!! originally bones was one of the things magic actually cant effect alongside time and hearts (this last one is rooted in the whole witches strong love thing, theres no way to change your true feelings with magic), so i know for sure at least that magic cant heal a broken bone the way it can heal a flesh wound or literally any other wound
(again though madam springs is a recent development and she probably has something for it!!!! like a combination of some special leaf wrap and a medicine or herbal bath that repairs bones in a week-ish, so bringing the bones thing back in theoretically isnt impossible to work with!!)
