Scrying Library

This library is unusual.  It doesn't contain books or scrolls like you would expect.  The shelves on the far walls hold ancient livewood tablets.  This is a huge discovery to anyone who would care.  These tablets contain the knowledge the druids gained while living there.  They are written in an ancient form of Sylvan and will take time to translate.  There are hundreds of these tablets lining the walls, stacked against eachother, or in small piles on the floor or on the tables situated a few feet from either row of shelves.
There is also a large pool of an unknown liquid in an elaborate cauldron like container in the center of the room a few feet away from the wall.

Valuables

The shelves that line the walls of this room are filled with ancient tablets written in a language so old that no one in the group can decifer.  Who knows what is on these tablets.  Unfortunately there are hundreds of these tablets and there is no way that you can take all of them with you when you leave.
Roll to know the rarity of the tablet you pick up.  20 is the rarest, with the possibility of finding a new spell or potion.