Quote and repeat what I've said: MISprint. It's pretty obvious to me from the wording.
Card text and the word Action here come from different criterias: the ability itself is a typical passive wording.
On the other hand, if the misprint is not about "action" we have a bad wording: if that's the case, the card was intended to be used "during" KP (in the appropriate action window) and the "at the beginning" part is a mistake.
IMHO.