The vanguard sent me on a quest to get one by trading in 5 felwinters snipers, and 1 thorn, then I needed the khvostov and an ass of atheon, giving me a vex brain, then I bought components from xur and killed Petra venge and also eris morn on a ftwc battle arena, giving me the mythoclast, then I had to watch porn for 9 hours straight with no boner.