Moonsteel Rapier 2014
Weapon, rare
The blade of this magic weapon seems to shine from within with a pale, white light. The weapon deals an extra 1d6 radiant damage to any creature it hits. If the creature is a shapechanger or any other creature not in its true form, it becomes frightened until the start of your next turn. At the start of its turn, a creature frightened in this way must succeed on a DC 13 Charisma saving throw or immediately return to its true form. For the purpose of this weapon, “shapechanger” refers to any creature with the Shapechanger trait.
Properties
Finesse
When making an attack with a finesse weapon, you use your choice of your Strength or Dexterity modifier for the attack and damage rolls. You must use the same modifier for both rolls.
Source: Vault of Magic (Kobold Press) · License: OPEN GAME LICENSE Version 1.0a details