So I've collected every single exotic in the game except one, that being the Nechrochasm. I've killed Crota on hard 45 times and still haven't even sniffed a crux, having only ever seen two drop one going to my friend on only his second kill and he doesn't even have a Husk. I got a mythoclast after about 10-15 kills. So my question is why does the RNG hate me on this particular weapon when the only exotic I've had to buy from Xur was a Suros.