>>39721414This is a geode with it's crystals resembling a mirror. It's also based on Yorishiro. Which is an object in Shinto religion capable of attracting spirits called kami, thus giving them a physical space to occupy during religious ceremonies. Many yorishiro were rocks, trees, mirrors and swords.
Its lore states that it can distort ones reflection as a line of defense to throw them off. Similar to a funhouse mirror.