SRD:Robe of Powerlessness

Robe of Powerlessness: A robe of powerlessness appears to be a magic robe of another sort. As soon as a character dons this garment, she takes a –10 penalty to Strength and Intelligence, forgetting spells and magic knowledge accordingly. The robe can be removed easily, but in order to restore mind and body, the character must receive a remove curse spell followed by heal.

Moderate transmutation; CL 13th; Craft Wondrous Item, bestow curse, permanency; Price 5,500 gp.