The Horn radiates Great evocation and alteration magic and its nature is obscured by Good illusion magic that affects attempts to discern its powers. Only an Epic test of divination magic will reveal the item's characteristics, though experimentation will also produce results. The Horn has the following powers and abilities:
- Shifting Nature - The device's owner suffers a gradual alteration of their fundamental characteristics and abilities. Each week they must make a Great resistance check against the Horn's power or suffer one of the following effects:
- One rank of a random attribute shift to another randomly determined attribute (strength shifts to intelligence for example).
- Gain one rank of ability in a sense (sight or hearing for example) while losing one rank in another.
- One physical feature undergoes a fundamental shift (hair or eye color for example).
- Gain or lose three inches in height.