Mementos are just glorified shaders that - can't be put on armor - can't be put on other weapons except crafteds/adepts(enhanced)/enhanced guns - require gun rank 30, THIRTY, T H I R T Y - are one time use, just like OG vanilla D2 shaders where...oh what irony (the more things change, the more they stay the same) This was the slippery slope they introduced back in WQ and everyone praised them for it (it was a cool gimmick at the time because shaders looked cool despite thinking they would of kept it at only those activities having em GM/Gambit/Trials), now look at what they did, every cool raid/event shader is just a memento while all the boring ones are shaders (only few are great) With the launch of Heresy we saw that indeed memento 'shaders' WORK on armor, they said they will fix the preview error and WILL NOT let mementos become appliable on armor (even if masterworked, not even artifice gear either.. God forbid the best top tier armor doesn't actually include a memento slot) despite each of those shaders clearly working w/ armor without issues. They will never fix the Monolithic memento yknow why? Because TFS has come and gone they've already gotten their money and forgot about it, gotta pump out the next content package for the new shinies people can buy (anyone remember how buggy Spire of Stars was and that as soon as it was released they moved onto the next content completely not giving a care about it having a myriad of issues? I do. It's just so funny how they have so many old old bugs still in D2 even to this day)