While this weapon is on your person, you understand the non-written communication of all Fey, and they understand yours.
As a Magic action, you can use the weapon to cast Message. Once this property is used, it can't be used again until the next dawn.
When making an attack with a Finesse weapon, use your choice of your Strength or Dexterity modifier for the attack and damage rolls. You must use the same modifier for both rolls.
If you hit a creature with this weapon and deal damage to the creature, you have Advantage on your next attack roll against that creature before the end of your next turn.