1. I'm not buying into christian bullshit.
2. As far as they have told, a vampire IS able to practice magic
-if not, then i would avoid becoming one.
Even in fiction, with its artificial drama, shows how boring and restricted a life without magic would be -especially one, being excarnated and ancient.
3. it would make sense, that magic would be boosted if being beyond death.
~But i'm not here to explain what magic is, what i will do is to tell whats not:
It is NOT some "superpower" you are born with.