This large black blade, shaped like a cross with a curved edge and bejeweled with precious stones, radiates enormous power.  Last rumored to have been seen a few hundred years ago far up north in Dusk Legion Territory, but now somehow found its way to Xia Bo. (This weapon is based and shaped off of a kriegsmesser)  This weapon named Night, was rumored to be able to split large galleons in half with a single swing of its might black blade.  Most vampires in the legion remember a Dracule Mihawk who was the owner of this blade, and a legend among the Dusk Legion. 

This weapon gains a +3 bonus to attack and damage rolls made with it, and uses your DEX mod.  In addition, you deal 2d8 Force damage with each hit.  While attuned to this great sword, you movement speed increases by 20 feet, and you emit black distorted shadows which give you a +3 to your AC and half cover within 10 feet of you.  If you choose to two hand this sword, you base damage goes from 2d6 to 2d10 damage.

Battle Trance:  You gain the ability to perform an Action Surge a number of times equal to half your proficiency modifier per short/long rest.  You score a critical hit on 18-20.  This sword gains the benefits of a Vorpal Weapon with siege weaponry.  You gain an Extra Attack.  While attuned to this artifact, you are under the effects of the Swashbuckler Rogues: Fancy Footwork, Rakish Audacity, and Master Duelist (3 times per long rest).

Lifedrinker:  When you score a critical hit and against target, you regain 4 of your hit dice which you may use as you will.  Can be used to regain hit points, or Sangromancy Spells.  You also heal up to 4 of your hit dice this way. You gain a number of Fury points equal to half of your proficiency modifier when you crit. Your Sneak Attack Damage deals an additional 4d6 damage.  You know the spell Vampiric Touch and may cast it at will at base level. 

Shadowy Visage:  As stated above, you emit distorted shadows around yourself that even the rising sun could not pierce.  You gain resistance to radiant damage when wielding this great sword, and are always under the effect of the spell Sanctuary.  A number of times equal to your proficiency modifier, you can make targets have disadvantage on you for one minute.  This recharges by nightfall.  You have two stages to this transformation.  *First stage changes some slight cosmetic differences resembling Mihawk himself.  Second stage is more dynamic with actual darkness bending to your will around you, resembling a thick black smoke.*

Nightfall:  A number of times equal to you proficiency modifier, you may perform the Eldritch Smite at max level.  This damage is Force and performs exactly as the Eldritch Invocation states.  This recharges on a short/long rest.  One per long rest, you may perform the spell Blade of Disaster, taking the spectral appearance of your sword at gigantic level.  While in your second stage, you may also cast Ravenous Void once per long rest.

Swordsman Magic:  While attuned to this artifact, the following spells are added to your lest of spells known.  They do not count against the number of spells you currently know, and you may cast each of these spells once per long rest before doing so again: Tasha's Mind Whip, Shadow Blade, Banishment, Steel Wind Strike, Wall of Force, Reverse Gravity.

• 2 Minor Detrimental Properties:  All holy water within 10 feet of you is destroyed.  Your appearance changes as the DM decides.
• 2 Major Detrimental Properties:  You take 4d10 psychic damage when you attune to this artifact.  Before using one of the artifacts properties as an action, you must use a bonus action to draw blood, either from yourself or from a willing or incapacitated creature within your reach.  Take 1d4 damage.
• 2 Minor Beneficial Properties:  You gain a +1 to your AC.  You can't be charmed or frightened.
• 2 Major Beneficial Properties:  While attuned to this artifact, you cannot be blinded, deafened, petrified, or stunned.  You regain 1d8 hit points at the start of your turn if you have at least 1 hit point.                  

  

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

Notes: Regis, Heavy, Two-Handed, Graze