Bad News:
NO Oracle blueprint can be generated from recurring quests - random rewards
I'm in Bronze Age and about to reach Level 10.
I think, "Great! Let me now unlock more levels!"
Checked the inventory, and found zero blueprint for Oracle.
By contrast, I've already collected about 5 sets of Zeus prints (nine pieces averaged) and 3 sets of Babel prints, all from recurring quests - random rewards
But no Oracle... So, Level 10, end of the line, for camper in Broze Age, since Architecture (enabling GB donation) tech is in (the beginning of) Iron Age tree.