Injury

Very Rare Light Hammer (Light, Thrown)
Requires attunement

Damage. 1d4+2 Bludgeoning Range. 20/60
Bruiser. You gain a +2 bonus to attack rolls you make with this weapon.
Knock Down. You can use an attack to slam this weapon against the ground, creating a shockwave that radiates out from you in a 15ft. cone. Each creature in the area must make a Dexterity saving throw (DC 16). On a failed save they are knocked Prone. You can use this feature twice per long rest.
Adding Insult to Injury. When you are attuned to both light hammers Insult and Injury, it only requires one attunement slot to attune to both those items instead of two.

Related Item
Insult