I have no experience with the wiki. Just to clear that up beforehand.
I couldn't find a page involving these two features. It would be useful to have one because these two things just popped up without instructions. Also, can anyone collaborate each shield's damage upon bumping? From my small arsenal, it appears that they do damage according to star ranking but there might be more to it than what I can see.
And dashing is, well, dashing. It would be nice to know the distance and stuff but that's about all there is to it.