Just farming the three Hive Yellows in the cosmodrone, and made my first kill only to turn around to find 4 Acolytes praying to this green ball and summoning a Hive Yellow Knight Holding and possesing the name plate Sword of Crota, upon killing the Knight i was then able to pick up the sword and kill the rest of the mobs, sword lasted about 5 mins i believe
-
The Hive were already invading Earth I'm assuming when the DLC drops the Cosmodrome will be crawling with them