Magical Horn

A Monster Trait.
From the Book of Engoku:

Description

One Short melee weapon carried by this creature is designated the Magical Horn by tying it with a silver ribbon. This weapon is considered Natural. Once the creature is shattered, it may be removed from the corpse (if the player of the creature does not wish to share his or her weapon, place the ribbon on another Short melee weapon). Once removed, the Magical Horn has the following traits:

• 1. Considered indestructible except by Sphere of Annihilation.
• 2. Considered a Magical Weapon
• 3. May not be further enhanced or Enchanted by any means.
• 4. Magical Horn may grant the bearer extra abilities or traits. These will be listed along with their usage in Parenthesis after Magical Horn in the creature’s description. These abilities and traits are considered Magical. This effect is not bestowed to the creature that owns the horn, only the one that loots it.
• 5. Not considered a Relic, and may therefore only be used in the game it’s provided in.
  
• 6. Usually not considered a Game Item, but may be designated as such by a Reeve for a quest.
  

Currently, the only known monster bearing a Magical Horn is the Kirin. A number of other monsters, such as the Unicorn, could likely be qualified by a creative Reeve as bearing a similar Horn to add flavor to a relevant battlegame. Consider addressing the issue with Reeves at your park if you play a horned monster.