Horns of NaragaEquipment 26
Source Pathfinder Gamemastery Guide
Weight 2 bulk
This imposing helm bears the horns of a powerful black dragon. While wearing the Horns of Naraga, you gain greater darkvision and immunity to acid. If you are undead, you gain resistance 40 to positive damage. If you are not undead, the helm quickly saps the life from you, dealing 10d6 negative damage to you every round. If you die from this damage, you rise as an undead of an equal level in 1d4 rounds.
Activate 
envision
Trigger You touch a creature as part of an unarmed attack or melee spell attack roll
Effect The creature takes 5d6 negative damage. If you are an undead, you regain Hit Points equal to the negative damage the creature took.
Activate 
command
Frequency once per day
Effect The Horns of Naraga transform into Naraga, an ancient black dragon. Naraga appears in an adjacent appropriate space, and if no such space is available, she does not appear. Naraga follows your commands without question. She remains for up to 1 hour or until you use an Interact action to dismiss her, after which she reverts back to the helm. If Naraga is slain, she immediately reverts back to the helm and can't be summoned for 1 week. You don't receive any of the helm's other benefits while it is transformed.
Destruction The helm is utterly obliterated if crushed between the jaws of an ancient black dragon's skull located in a desert while the sun is at its zenith.
Traits
A rules element with this trait is one-of-a-kind. The DC of Recall Knowledge checks related to creatures with this trait is increased by 10.
InvestedA character can wear only 10 magical items that have the invested trait. None of the magical effects of the item apply if the character hasn't invested it, nor can it be activated, though the character still gains any normal benefits from wearing the physical item (like a hat keeping rain off their head).
MagicalSomething with the magical trait is imbued with magical energies not tied to a specific tradition of magic. A magical item radiates a magic aura infused with its dominant school of magic. Some items or effects are closely tied to a particular tradition of magic. In these cases, the item has the arcane, divine, occult, or primal trait instead of the magical trait. Any of these traits indicate that the item is magical.
NecromancyEffects and magic items with this trait are associated with the necromancy school of magic, typically involving forces of life and death.