Dark Revelation

Dark RevelationHelmet
Effects	This hat grants its wearer a +6 enhancement bonus to Wisdom ability score. It also increases by 1 the DC of all Divination school spells cast by the wearer.
1 lbs.
Sell: 18500 Buy: 74000
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HatWitchBlackItem (be1486487d0b94247b2af03c60bbd860)

Dark Revelation is a magic Helmet in Pathfinder: Kingmaker.

Practically, the bonus to Divination school spells affects only Prediction of Failure spell.

Source

Found in a hidden room of Tenebrous Depths XIV.