I know what you're thinking - how formidable a knight could this be if he's already been slain once? Well, that is a textbook fallacy which you shall learn at your own peril! He's already been slain once, now he has nothing to lose! Think on that! Actually, don't get too caught up in the motivation of this wraith. Just focusing on killing it, and avoiding its fell blade, which you just KNOW is cursed or something.
