Tentacle Cannon (Major)Weapon 17
Source Pathfinder Guns & Gears
Damage 1d8 Piercing
Type Martial
Range 30 feet
Price 15,000 gp
Weight 2 bulk
A major tentacle cannon is a +3 greater striking weapon, built using components from squids, krakens, and sometimes even stranger tentacled creatures like alghollthu. It's a distinct type of martial firearm that deals 1d8 piercing damage. It has the capacity 5, concussive, and fatal d12 traits, a range increment of 30 feet, and reload 2. The weapon itself resembles a five-barreled handheld cannon with each barrel made from a hollowed out tentacle.
Activate 
Interact (magical, transmutation)
Effect You cause one of the tentacles forming the weapon's five barrels to stretch out and attempt to pull and grab a creature within 15 feet. The tentacle attempts to Grapple with a +27 bonus. It can attempt to Grapple any creature, regardless of size. On a success, the tentacle pulls the creature up to 10 feet directly towards you, until it's in a square adjacent to you.
Activate 
Interact
Requirements The tentacle cannon has a creature Grabbed
Effect You continue to keep the tentacle cannon's hold on one creature it has grabbed. Attempt another check to Grapple the creature with a +27 bonus.
Activate Interact
Frequency once per hour
Effect The cannon fires a spray of ink in a 15-foot cone. Creatures in the area must attempt a DC 37 reflex save. On a failure, the creature is covered in ink and becomes Blinded for 1 round and Dazzled for 1 minute or until it removes the ink. On a critical failure, the creature becomes blinded and dazzled; both conditions last for 1 minute or until it removes the ink. The creature, or an adjacent creature, can use an Interact action to remove the ink from its eyes to remove the blinded and dazzled conditions.
Craft Requirements The initial raw materials must include the tentacles and ink glands of a creature with a tentacle Strike and ink.
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.
CapacityWeapons that have the capacity trait typically have multiple barrels or chambers capable of containing a round of ammunition. Capacity is always accompanied by a number indicating the number of barrels or chambers. After a capacity weapon is fired, you can select the next loaded barrel or chamber as an Interact action that doesn't require a free hand. Each barrel or chamber can be reloaded after it's fired as a separate Interact action.
ConcussiveThese weapons smash as much as puncture. When determining a creature's resistance or immunity to damage from this weapon, use the weaker of the target's resistance or immunity to piercing or to bludgeoning. For instance, if the creature were immune to piercing and had no resistance or immunity to bludgeoning damage, it would take full damage from a concussive weapon. Resistance or immunity to all physical damage, or all damage, applies as normal.
EvocationEffects and magic items with this trait are associated with the evocation school of magic, typically involving energy and elemental forces.
FatalThe fatal trait includes a die size. On a critical hit, the weapon's damage die increases to that die size instead of the normal die size, and the weapon adds one additional damage die of the listed size.
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.