Did a few searches and couldn't find any other thread about this, was soloing a Yagudo High Priest in Meriphataud[S] and it used a move named Feathered Furore. It unequipped my shoes, didn't seem to do anything else. Fought a couple more times and was unable to get the move repeated, so I'm not sure if its random gear or specifically shoes. So, I made this thread to list new moves on older monsters:
Yagudo - Feathered Furore - Removes footgear(Possibly random equipment?)