A weapon charm commonly used by mercenaries in the Crossroads and beyond. As an action, you may attach a weapon charm to a weapon of your choice that meets its prerequisites, conferring unique properties. You may detach a weapon charm and reattach it to a new weapon as part of the same action. A weapon may benefit from only one weapon charm at a time. 

Prerequisite: Melee Weapon, Heavy Property

If you hit a creature with a melee attack using this weapon, you can make an attack roll with the weapon against a second creature within 5 feet of the first that is also within your reach. On a hit, the second creature takes the weapon’s damage, but don’t add your ability modifier to that damage, unless that modifier is negative. You can make this extra attack only once per turn.