Banshee

Weapon (cutlass)

This weapon is mechanically considered a Rapier.

• Once attuned you gain a bonus to attack and damage rolls equal to half your proficiency bonus rounded down (minimum 1). Note: This feature has to be added on the Character Sheet manually. Click on the Banshee weapon under Actions (Attack), click Customize, adjust the To Hit Bonus and Damage Bonus to match 1/2 your proficiency bonus rounded down (minimum 1).
• As an action you can shunt the blade to the ethereal plane. The blade remains there until you use your action to summon it to your free hand. A creature on the ethereal plane can interact with the blade but cannot remove it unless your attunement ends.

The weapon also has a number of charges equal to your proficiency bonus. These charges replenish at Dusk and can be used to activate the following features. Note: To make it easier to remember, these features can also be added to your Actions on your Character sheet be manually adding them under the Manage Customs section.  

• As a bonus action you can spend 1 charge to cause the blade to be wreathed in wispy spectral energy. For the next 1 minute, attacks with the blade deal an extra 1d8 Necrotic damage. If you are not in sunlight this damage increases by 1d8.
• As a bonus action you can spend 2 charges to become incorporeal until the end of your next turn, provided that you aren’t in sunlight. While incorporeal you can move through other creatures and objects as if they were difficult terrain, you cannot be grappled or restrained, you gain resistance to Bludgeoning, Piercing, and Slashing from Nonmagical Attacks, and have Immunity to Cold and Necrotic damage. If you end your turn in a solid object, you are shunted to the nearest unoccupied space, and you take 1d10 force damage for every 5 feet traveled.
• As an action you can spend 3 charges to cause the blade to release a mournful wail, provided that you aren’t in sunlight. This wail has no effect on constructs and undead. All other creatures within 60 feet of you that can hear the wail must make a DC 10 + your proficiency bonus Constitution saving throw. On a failure, the creature takes 6d6 necrotic damage and is frightened of you for 1 minute. A frightened target can repeat the saving throw at the end of each of its turns, with disadvantage if the blade is within line of sight, ending the effect on itself on a success. If a target’s saving throw is successful it takes 3d6 necrotic damage and the target is immune to the blade’s wail for the next 24 hours.

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

Notes: Bonus: Magic, The weapon also has a number of charges equal to your proficiency bonus (6 is used because DnD Beyond does not have a scaling feature yet). , Long rest, Finesse, Vex