Edit: This isn't actually anything new. I got the gunsmith weapons and decided to farm hive. I went to the hall of souls (court of oryx area) and just started running circles killing hive. But I noticed something abnormal. There are certain places on the map 2 I've noticed so far where hive are praying to the places the dreadnaught "engine/batteries" were. Kill the hive then taken spawn and eventually a yellow bar taken knight will spawn. I believe they have different names but I can check. Is this new? Because I don't recall these happening before? Edit: I didn't realize this was for the calcified fragment. Sorry everyone.