I'm DM'ing my friend's game next week and I've had an idea for a lost Artifact* of the Archive:
Essentially, what I want to use is an intellectus book* version of the Archive, though when held by anyone not authorized by the Archive (currently Ivy) it only showcases a single subject to a single user when asked a single question for a period of a single lunar month (28 days), after which it becomes blank.
*Initially wasn't her artifact, but she claimed it and severely limited it potential after becoming aware its existence.
**Actually looks more like a scroll.