You gain a +3 bonus to attack and damage rolls made with this magic sword.
This sword can tear the fabric of reality, creating a temporary rift between planes. You can use your action to choose a different plane of existence from the one you're on and slice through an unoccupied space within 5 feet of yourself, creating a rift to that other plane. The rift can be up to 10 feet high and 10 feet wide, and it lasts for 1 minute. Once this property is used, it can't be used again until the next dawn.
You can specify a target destination, such as the City of Brass on the Elemental Plane of Fire or the palace of Dispater on the second layer of the Nine Hells, and the rift opens in or near that destination (DM's discretion). If you are trying to reach the City of Brass, for example, the rift might appear on the Street of Steel, before the Gate of Ashes, or facing the city from across the Sea of Fire, at the DM's discretion.
Anything that enters the rift is instantly transported to the other plane, appearing in the unoccupied space nearest to the rift.
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.
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.
When you make the extra attack of the Light property, you can make it as part of the Attack action instead of as a Bonus Action. You can make this extra attack only once per turn.