I farmed for 7 hours straight on blades of crota and still haven't gotten it , at least I Have the embalming orb :(
English
-
Lol I hope you're doing the fist of Crota mission. There is a sword of Crota knight there at the beginning after the wave. You just skip the wave and go to him. If you don't get it just go to orbit and restart the mission until you get it