I need one more mote of light to unlock exotic Khvostov. (Currently have 16, from my understanding I need 17). I believe I get that from each new boss that I kill in overthrow. I missed one mote of light from the Taken eyeball boss. I left to finish off an Alone in the dark quest while my fireteam members killed the boss. I checked if killing it again would drop the mote, but it doesn't. I have included screenshots of my triumphs, and the amount of motes of light I have. Please give my Khvostov, I would love to use it in day one raid.