wish I'd have read this before dismantling one of my HotP's for the embalming orb (which was listed as the materials). Got glimmer and parts. Oh well, I've still got 2 of them and I've found 4 overall by simply patroling...mainly in Steppes and Skywatch on Earth. EDIT: I've noticed that if I do body damage on the swordbearer first, then land the killing blow as a headshot using a scout rifle or hand cannon, I often get one. Also, for non-crit damage I've used a void weapon. Still trying to find a solid pattern when I have time.