I was looking at the skills list for bishop and cardnal.
when I read this:
Removes buffs that increase Speed from nearby enemies. Temporarily decreases Speed and prevents enemies from receiving removed buffs that will increase their Speed again.
As every one knows, zerk also increases speed as well, and so does song of wind.
If you cast that on a player would it also remove those two buffs as well?
Umm I have the book but not high enough to answer, sorry. I asked someone who has it though and they said yes, it effects zerk, song of wind, everything that increases your speed as a BUFF. (not tats, or armor sets).
Unfortunately, no, it doesn't remove anything other than Windwalk. Unless the mass version is different from the single target one. Same goes for Banes.