Xur is useless and idk why he's in the game at this point. And no.. Masterwork cores are used for a c t u a l l y m a s t e r w o r k i n g g e a r and also infusing??? and they're relatively rare??? 🤔🤔🤔 wack, artificial grind and content just to extend the longevity of this dlc??? 🤔🤔