The isochronal engram claims to give you a new exotic if any are yet to be found, yet I have never gotten a new exotic from one. These engrams can be bought from Xur at 97 shards, while the guns cost a fourth of that and the armor even less, however all it seems to do is give me the same exotics I could buy from my collections at an incredibly decreased cost. With the absolutely garbage drop rate of exotics and so many duplicates I am incredibly frustrated to have wasted nearly 400 shards on false promises. Please fix this Bungie, I just want to enjoy the game instead of being let down at every corner.