I completed my 18 matches of IB for the Memento and I haven't gotten a single one yet and I've already reset my IB rank once and halfway through another reset. The 4/4 challenge says you get a guaranteed one but I haven't gotten it. I was wondering if it was because I have a bunch of mementos already because I have 3 of each of the other ones so I wonder if its bugged and thinks I'm out of room or something? Something to look into.