Dancing Shortsword

You can take a Bonus Action to toss this magic weapon into the air. When you do so, the weapon begins to hover, flies up to 30 feet, and attacks one creature of your choice within 5 feet of itself. The weapon uses your attack roll and adds your ability modifier to damage rolls.

While the weapon hovers, you can take a Bonus Action to cause it to fly up to 30 feet to another spot within 30 feet of you. As part of the same Bonus Action, you can cause the weapon to attack one creature within 5 feet of the weapon.

After the hovering weapon attacks for the fourth time, it flies back to you and tries to return to your hand. If you have no hand free, the weapon falls to the ground in your space. If the weapon has no unobstructed path to you, it moves as close to you as it can and then falls to the ground. It also ceases to hover if you grasp it or are more than 30 feet away from it.

Vex (Mastery): 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.

Finesse: 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.

Light: When you take the Attack action on your turn and. attack with a Light weapon, you can make one extra attack as a Bonus Action later on the same turn. That extra attack must be made with a different Light weapon, and you don't add your ability modifier to the extra attack's damage unless that modifier is negative. For example, you can attack with a Shortsword in one hand and a Dagger in the other using the Attack action and a Bonus Action, but you don't add your Strength or Dexterity modifier to the damage roll of the Bonus Action unless that modifier is negative.

Proficiency: martial, shortsword Source: Dungeon Master's Guide (2024) p. 248