Board Thread:League of Legends discussion/@comment-30294351-20170421080353/@comment-30294351-20170422115847

A) Yes.

B) The only champion that steals MS is Malphite, as far as I know. I haven't tested Malphite out, but it seems he does steal MS, as shown in Feantugeiha's "How To Get Infinite Movement Speed - League of Legends" video.