WTH are arcane fireworks? I have 19,000 of them and they don't go with any legends. Are they supposed to be for the osami two crest plates and I'm just not getting the legend for it?
It was for the only side legend for this set of legends. You most likely already completed it with the amount you already have. For some reason once finishing the side legend the drops didn't shut off like they normally do. Its a bit annoying but perfectly harmless.