Piano Wire (5e Equipment)
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Martial Melee Weapons
Thin metal wires made of tempered brass or iron initially intended to create tone inside a piano, piano wire can also be used to create certain tones inside your enemies. While not an exceptionally common weapon due to extensive and unique training; skilled, armored fingers are able to effortlessly manipulate this strange piece of equipment in combat.
When you take the Attack action and attack with the piano wire, you can use a bonus action to make another attack with the piano wire. If this attack hits, you deal 1d4 slashing damage. You don't add your ability modifier to the damage of the bonus attack, unless that modifier is negative.
If you have the double weapon master feat, you deal 1d6 slashing damage with both the piano wire's normal and bonus attack.