Quote Originally Posted by Andezzar View Post
It is in one of the rules of the game articles which are not RAW.
Personally I think this falls under the category of if your DM rules against it, find a new DM...

The iconic wizard in stories carries a staff. To be unable to create that character in d&d is foolish.

Since that is just my opinion though it may not be helpful for convincing a DM who for some reason loves following the rules to the letter regardless of the outcome.