For those who are unaware, eris morn no longer sells the materials required to upgrade husk to eidolon ally. So I have to wonder... is there another way to get necrochasm from HotP, or am I screwed? An answer from a bungie dev would be appreciated.
Once you upgrade it to the Eidolon Ally all you have to do then is beat Crota on hard mode about 50 - 60 times (not kidding) to hopefully get the Crux of Crota. Each time you kill Corta (on hard) ONE person MIGHT have an astronomical CHANCE to possibly get the Crux. I've beaten Crota on hard many times, across all characters and I've never seen anyone get it. I've only ever seen two of them, and I've been in since the Beta, of course that might be because word is that it sucks and not even worth trying for, much less obsessing on. Play on and don't expect anything, it's the only way not to be disappointed in Destiny.