Board Thread:General Discussion/@comment-96.233.74.45-20140413040730/@comment-10390252-20140527134228

He wrote a Tweet a while back in which he said "I wonder what all those rose petals are that appear from Ruby?". This was after Pyrrha had explicity said that Ruby has a speed semblance, implying strongly that Ruby had some other ability that was linked up with the rose petal clouds.

I thought about it for a while and decided that, as the rose petals were shown when Ruby used her speed, they must be associated with her semblance and that the most likely explanation was that Pyrrha was wrong about what Ruby's semblance was. As Ruby and Weiss didn't know what Pyrrha's semblance was before that scene, I assume that they are not common knowledge (possibly not even the teachers are automatically in the know). That means that Pyrrha was, at best, making an educated guess about Ruby's semblance and it might actually be something else that may prove significant later on.