So in this game there is a line about how some object is called a dragon egg and inside it seems there are these magic items that god placed inside. The part of the sentence that I do not get is お使いになられた. お使い is a messenger and なられた is the passive form of なる. It sounds like the magic items became the messenger. Maybe I am misunderstanding the use of the passive verb here. Could someone clarify that section this to me?