I believe that in magic anything is possible, That monks in asia probably could levitate but it would have took their whole lives to levitate. like 50 years day in and out but its still a mystery. And on the shift changing thing that the old druids could have turned into a bird but that no one probably has for thousands of years. The werewolf and the vampire stuff is just not possible to me.
I think that when people talk about these things we should really see that anything is possible and shouldn't take away their dreams its what makes the magic real that miracles are possible and that you can do anything you put your mind to. That's why we are brought up with story's of David and Goliath. And other legends, I think those story's are their because god wants to fill us with hope that we can do anything we put our minds to and that magic is real.