Shifter ProsthesisEquipment 6
Source Pathfinder Lost Omens: The Grand Bazaar
Price 210 gp
Weight 1 bulk
This prosthetic arm is imbued with transmutation magic that can transform it into a weapon.
Activate 
command, Interact
Requirements You are holding a one-handed weapon
Effect The prosthesis engulfs the weapon and absorbs it entirely. The weapon is unavailable until you use this Activation to release it from the prosthesis. The prosthesis can hold up to two items at a time.
Activate 
envision
Frequency once per minute
Effect The prosthesis reshapes into the form of a weapon it has absorbed. The prosthesis has all of the statistics of the weapon, including the effects of any etched runes. The prosthesis remains in this weapon's form until you use this Activation again to revert it back to a prosthesis.
Traits
Anything that doesn't list another rarity trait (uncommon, rare, or unique) automatically has the common trait. This rarity indicates that an ability, item, or spell is available to all players who meet the prerequisites for it. A creature of this rarity is generally known and can be summoned with the appropriate summon spell.