This exhibit is dedicated to The Shadowlands. The PC's will be amused that they currently understand the workings of that strange domain far better then whomever designed the exhibits.
There is one new thing to learn however. One exhibit focuses on the The Metaphysics of Shadow, detailing the seven primal forces the Ann believed fundamentally governed the universe.
The belief system is very similar to the heretical Mithras belief scheme found in the The Books of the River.
Each character that wields significant magical powers will feel themselves drawn to one of these forces. Bards are always drawn to Music but other classes may choose which one they are drawn to.
From that point on the character will feel a mild compulsion to seek out lore aboot this magical sphere. The compulsion is very mild, a curiosity mostly, easily resisted but ever present.