So I bought 3 helmet Engrams this morning and all 3 turned into Obsidian Mind, I also got 2 Exotic Primary Engrams and they both turned into The Last Word. Is this a bug or is it the way Bungie wants it to make it harder to farm for Exotics? To get the primary engrams I used three of coins from which Xur was selling too. Used about 25 and got 3 Exotics. (at least The Gauntlet I got couldn't double lol)