Warehouse Chief Mona:
Here is the item that was deposited. It's called a Resonance Amulet. I heard that it activates a spell on the Tablet of Vision. I'm sure that you'll learn the rest once you find the Tablet and experience it for yourself.
The first Tablet you'll need to find is in the area south of the Tower of Insolence. That's what I've heard, anyway; it's no use asking about anything else.