Welcome to the downs, Felagund. I see that you are a new poster.
I will have to disagree, Felagund. For one thing, the Numenoreans under the mountain have been cursed by Isildur, and that is something like casting a spell. Secondly, the words that Gandalf quotes in the Council were certainly not just some sort of Virtue; it must have been a black magic. Thirdly, how do you account for Morgoth and Sauron, etc. having magic-like powers if they certainly don't have Virtue?
There has to be a certain inalienable magic in Middle-Earth. I admit, it doesn't play as prevalent a role as it does in other movies and stories, but there must certainly have been a magic of some kind.
Perhaps I didn't quite understand you're meaning of 'Virtue', though.
b_b