Mask of Tengu Influence (3.5e Equipment)
From D&D Wiki
Mask of Tengu: The Mask of Tengu is an ancient mask carved from the wood of a cherry blossom tree and combined with the voice of Kami Shikura.
After 24 straight hours of continuous wearing, the mask allows the wearer to prepare 1 extra spell per spell level per day, +2 Intimidate, +2 Diplomacy, and +2 Appraise from the power of the ancient kami whom empowered it.
Weak Divination;CL 6; Craft Wondrous Item; Cost 5,000gp; Weight: 1 lb.; Market Price: 10,000gp