The Crystal Ball is a rare, reusable item that allows the player to uncover sections of the map not-yet explored. It reveals a 5-hex diameter patch of terrain with each use, and can be targeted up to 15 tiles away from the group. It has a cool-down period of 30 days.
The crystal ball does not reveal location types (Their ? icon will remain).
It is rarely found for trade from a caravan, random loot from buried treasure, or rarely from cave crevices and shrines.