>>149213428Honestly, that depends on how one would interpret that type of magic, because like, would that Kryptonian hurt his hand if he punched the shield too hard? If the answer is yes, then that's already countering their "invulnerability".
And remember, Superman isn't actually invulnerable, he can still feel pain and get hurt, it just takes a lot of power, like Doomsday, or say, maybe punching into something so unbelievably hard that it would start hurting his knuckles.
In other words, I absolutely think that theoretical magic shield would be able to hurt Superman if used as a weapon like Cap's shield or something.