For those if you who dont know, thats an image of the "servant of the hand", part of a quest line from the dark below dlc, killing it triggers an ambush by the hand of Crota Originally Eris would give you a quest to kill Crota's generals, the fist of crota is in a mission, the next 3 the hand, heart, and eyes of Crota and can still be found on earth patrol, and finally omnigul served as the will, but the quest to kill them has been altered, your now only required to kill the fist and the will to adavance the story missions