DM: Alright, you work the door back and forth a few times and break the crumbling wax seal on the door. Looking in, the room beyond looks pretty much like the other three sealed vaults you've examimed so far. (~ in the basement levels of the ruins of a particular grand library~)
Druid: We'll do like we did with the others - give the room a nice, through search. Any other exits aside from the one we came in?
DM: Nope, no other exits. You do notice that while most of the front bookshelves' contents are intact, some of the books and scrolls on the rear shelves show signs of wear. The paper seems rather frayed and 'boof'ed out at the edges.
*rolls a few d20s and consults the DM cheat-sheet* Spirit Shaman, you spot something out of the ordinary as you go about the room. Under one of the writing desks, you spot three scarab beetles, slowly scuttling about.
Spirit Shaman: That's strange, there was a distinct lack of anything living in the other vaults. Do they seem any different with second sight (~detect spirits class feature~)?
DM: *rolls a covert, rather high dc knowledge check, and again consults the sheet* They're possessed of an odd sort of spiritual presence. Diffuse, almost. Nothing you're familiar with, though
Spirit Shaman: Huh, okay. Say, do we have anything I could scoop these little guys up in, like a mason jar or the like?
Spellthief: What about from that alchemy lab? You know, from the necromancer we just killed the sh*t out of.
DM: Yeah, there's definitly something from there that could fit the bill.
Spirit Shaman: Cool! Okay, I scoop the beetles up, make sure they've got some air-holes, and put the jar in my pack. Neat, I've got me some spirit beetles.
DM: *nods and shuffles his notes a bit and thinking to himself... let's see... ah, there we go. "We"; cerebrum scarab hivemind that retains the knowledge from all written materials consumed. And now they're carrying some around with them. This could get interesting.*