Reflection traps

Exploration Stage: Foggy Backstreet
From: Lucas
Description: Have you seen my doll? She showed up a few times, so I grabbed her hand, but her misty hands were slippery and she got away. Well, Vila was right. It looks like I'll have to use a fractal trap. Do you know where I can find one?
Completed: Thanks for the fractal trap! My sister once told me that the reflections produced by the crystals in this trap can capture spiritual creatures. I'm sure that both me and the fog doll will be able to catch them as soon as they get close enough to this thing.