Invisible Enemy

From: Icy
Description: I will compare the energy of the clues you've found to find out who froze the Christmas Book. But I'll need time and some artifacts. Will you help me get some before I dive into my study?
Completed: The aritfacts' energy formed a magical stream that's reflected from the clues. Jack Frost is not guilty of freezing the Christmas Book, neither are the other Christmas thieves, but the brooch swallowed the stream... Look, the brooch has created the projection of a book! What's written in it?