Private Sanctum

You increase the magical security in an area, choosing one or more of the following: * sound cannot pass the edge of the area. * light and vision cannot pass the edge of the area. * sensors created by divination spells can neither enter the area nor appear within it. * creatures within the area cannot be targeted by divination spells. * nothing can teleport into or out of the area. * planar travel is impossible within the area. Casting this spell on the same area every day for a year makes the duration permanent.