Caterwaul SlingWeapon 5
Source Pathfinder Core Rulebook
Damage 1d6 Bludgeoning
Type Simple
Range 60 feet
Price 155 gp
Weight light
Made of shiny brown leather, this +1 striking sling has a single white thread interwoven into its cord.
Activate 
Interact (sonic)
Frequency once per day
Effect You pull the white thread free, then whirl the sling in circles at high speed. It lets out an ear-piercing wave of sound. Each creature in a 30-foot cone takes 4d6 sonic damage (DC 21 basic fortitude save). Any creature that fails is Deafened for 1 round, or 1 hour on a critical failure.
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.
EvocationEffects and magic items with this trait are associated with the evocation school of magic, typically involving energy and elemental forces.
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.
PropulsiveYou add half your Strength modifier (if positive) to damage rolls with a propulsive ranged weapon. If you have a negative Strength modifier, you add your full Strength modifier instead.