Is there anyone out there that knows how the RNG for destiny works? I've heard that it tends to give you what you don't have but since my exotic collection has been getting larger the awards in nightfall have gotten worse and worse. My first two weeks in destiny I got 4 exotics from the two characters I had in nightfall but now I always get legendary weapons. I guess it is completely random and I got lucky but I'm jut wondering if someone knows something I haven't heard.