| || Ah...my name is — Berry. Of Bushtown.
The following information is based on the anime and not considered canon.
The Mirror of Fear was an object used by Thaegan to manipulate the minds of Lief, Barda and Jasmine. When directed at a person, the mirror shines and transports the person into their darkest reality. It has the power to show people's weaknesses and fears, in which these events can be watched on the mirrors surface.
Sorceress Thaegan is Back!
Thaegan used the mirror when she was revived the second time to trap Lief, Barda, and Jasmine. She also sent Zan, Zod, Pik, Snik, Lun, and Lod inside the mirror to look into the companion's fears and present them with challenges.
Lun and Lod turned into a dark version of Lief in order to play off his fears of being unable to protect his friends; Pik and Snik turned into a copy of Prandine who berated Barda about his inability to protect his mother; and Zan and Zod suspended Jasmine in a cage over boiling water, forcing her to solve a puzzle in confined spaces.
Mirror of Fear
Being impatient with the children's inability to break the trio, Thaegan came across the mirror and asked it to tell her more about their weaknesses. This led to Zan, Zod, Pick, and Snick telling Jasmine and Barda that, if they gave up their lives, Lief will be allowed to free. Barda and Jasmine agree to these terms, not realizing that Lief was listening in from his chamber in the mirror. Lief realized the evil nature of the mirror and managed to free himself and the others, cracking the mirror in the process.
Lief used a piece of the mirror in the following battle against Thaegan, and its fear-magic stripped Thaegan of her youth and beauty. This prompted her to commit suicide along with her children (barring Ichabod).