Weapon (longsword), legendary (requires attunement).

You have a +3 bonus to attack and damage rolls made with this magic weapon.

This long sword is the bane of all magic users and the ideological representation of the organization that had it crafted. The Silent Whispers, a centuries old organization of assassins led by a Vampire only known as Nightshade. This weapon is the epitome of their philosophy and they will do whatever necessary to obtain it for their organization.

 It is said to have been crafted from a meteor and empowered with a spell-like ability to create a sphere of silence when drawn.

The weapon is completely black and contains small onyx gems in the guard and pommel. Seemingly created in one piece, the Silent Sword is weightless and perfectly balanced. 

15 radius when drawn from its specialized scabbard. For the duration, no sound can be created within or pass through a 15-foot-radius sphere centered on the sword. Any creature or object entirely inside the sphere is immune to thunder damage, and creatures are deafened while entirely inside it. Casting a spell that includes a verbal component is impossible there. No magic that contains a verbal component can be cast within this sphere. 

Dispelling is possible (cast at 9th level  (DC 19)). However the blade will regain its ability at the next dusk.

Whenever combat is initiated against the bearer and is subject to the sphere of silence he/she/it must succeed on a Wisdom saving throw (DC 15) or drop whatever it is holding and become frightened for the duration. If the opponent of the bearer is a wizard/Sorcerer/Warlock/Druid/Cleric (magical caster) any spell that is currently active and requires concentration is immediately subject to a concentration check DC 15. If they fail, their spell is disrupted as the void of silence becomes overbearing and instills an overwhelming fear upon them. While frightened by this spell, a creature must take the Dash action and move away from you by the safest available route on each of its turns, unless there is nowhere to move. If the creature ends its turn in a location where it doesn’t have line of sight to you, the creature can make a Wisdom saving throw. On a successful save, the spell ends for that creature.

Proficiency with a Longsword allows you to add your proficiency bonus to the attack roll for any attack you make with it.

Notes: Weapon Property: Finesse, Bonus: Magic, Weapon Property: Light, Weapon Property: Versatile, Deafened, Bearer must Long Rest with the sword in complete silence in order to attune. Any disruption (even the sound of a cricket) will break the attunement., Combat, Bane, Versatile, Sap