Staves so.. larger sticks? Perfect! Why not? To be fair, all our magic is related directly to the Great Ones - ancient race that came before, cosmic powers, blah blah. They're worshiped in Yharnam. Any magic you can do is because you've either got a line on them or you've touched greatness or whatever. I'm a little more cynical (greatness is slimy), but it is what it is.