Those 3 items are mag cells. Pioneer parts makes pioneer mag at level 50 on any non rare mag. Cell of 502 at mag level 100 makes soniti for viridia, skyly, purplenum, redria, or yellowboze (vspry) or pitri for greenil, blueful, pinkal, oran, or whitill (gbkoe). In the same way, cell of 213 at mag level 100 makes churel for vspry or preta for gbkow.
Wedding dress is dropped from ultimate epsilon for pinkal or whitill on ep 2 1/487 or shambertin for redria on ep 4 1/146.