Thunder HelmEquipment 5
Source Pathfinder #179: Cradle of Quartz
Price 160 gp
Weight light
The creator of the original thunder helm tried and failed time and again to craft a reliable, helmet-mounted firearm that enabled hands-free gunplay, but even after resorting to magical enhancements, they were never quite able to realize their vision. The allure of the thunder helm continues to compel certain mindsets in the Mana Wastes, and these items continue to be crafted to this day.
A thunder helm appears as a cylindrical iron helmet adorned with a crown-like display of gun barrels extending out in all directions. A slit in the front allows for limited visibility, while sound is muffled by the inner lining. As long as a creature wears a thunder helm, it takes a -1 circumstance penalty to auditory and visual Perception checks but also gain a +1 circumstance bonus to saving throws against auditory and visual effects.
Activate 
envision, Interact
Frequency once per day
Effect The helm's gun barrels swivel and aim randomly, then conjure enough gunpowder and bullets to fire in all directions around you. Every creature within a 20-foot emanation takes 4d6 piercing damage (DC 19 basic reflex). When determining a creature's resistance or immunity to this damage, use the weaker of the target's resistance or immunity to piercing or bludgeoning.
Traits
Something of uncommon rarity requires special training or comes from a particular culture or part of the world. Some character choices give access to uncommon options, and the GM can choose to allow access for anyone. Less is known about uncommon creatures than common creatures. They typically can't be summoned. The DC of Recall Knowledge checks related to these creature is increased by 2.
ConjurationEffects and magic items with this trait are associated with the conjuration school of magic, typically involving summoning, creation, teleportation, or moving things from place to place.
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.