Mirror

The Mirror is an item in the world of The Last Guardian.

Summary
The Mirror is an item first found in the temple by Trico. It draws from an ethereal light source, and when shined against a structure, can be used to direct Trico's tail attacks at specific locations.

The exact nature of this mirror and specifically how it controls Trico is as of yet unknown, though it is suspected that it has something to do with Trico's past and status as a warrior, as Trico is found chained up nearby.