Artifact Personality
Each time a master successfully adds a masterpiece level improvement (a task or skill imbuement or a statistic enhancement) a new personality is generated for the masterpiece.
If the master decides she likes the personality (by reacting to it with her own personality or by a perception task which gives her insight into its character), she may decide to forego further improvements in order to freeze the personality at that state. Or she may decide to take her chances by adding further improvements, but risking a less agreeable personality (or an insane personality or an evil personality or even a shapeshifting item).
See also Forge Template.
— Scotus - 17 Dec 2000
