Portable Door

At first glance, this appears to be a simple leather-bound tome, its front cover a depiction of an fine oak door. However, when this book is opened, it reveals a gateway to an extraplanar 'pocket' dimension.

This dimension is approximately ten feet cubed, and it was empty when the Heroes of Garatome first found it. It is lit by candlelight, though no candles burn in the pocket dimension, and the space has an faint but unmistakable almond odor - like that of an old book.