Chair of Remorse

From A Wheel of Time Wiki

The Chair of Remorse is a ter'angreal kept in the second basement of the White Tower. It is a rectangular, marble-gray block that is as hard as steel, except for the top which molds itself around the person seated upon it. There is a small hole on one side filled with tiny, unevenly spaced notches. Channeling into this hole forces the person seated on the Chair to experience possible consequences of his crimes.

[edit] Appearances

Five Sitters of the Hall, Seaine, Saerin, Doesine, Yukiri, and Pevara use the Chair of Remorse to force Talene to reveal that she is Black Ajah, and accuses Elaida as well.