Weapon (greatsword), very rare (requires attunement by a of any alignment other than Evil)

Weapon (greatsword), very rare (requires attunement by a of any alignment other than Evil)

Nightblood is a magical, sentient weapon whose sole purposes is to "Destroy Evil." The blade is completely black and is usually contained within its silver sheath. When drawn from the sheath it exudes a black smoke and its more magical effects can be used.

Nightblood has three different modes of use:

Sheathed

Exposed

Unsheathed.

Sheathed

You gain a +3 bonus to attack rolls made with this magic weapon. When Nightblood is sheathed it acts as a regular Greatsword, although his damage is Bludgeoning instead of Slashing.

Exposed

When Nightblood is exposed, that is only partially drawn from the sheath, but still mostly covered, it begins to exude a black smoke and begins to seep into the minds of those nearby.

If Nightblood is thrown in this state at a creature that is not of a Good alignment, he will reach out psychically and attempt to have them pick him up and fight with him per the Sheathed state above. The creature(s) must make a saving throw to resist picking him up and using his to attack any nearby creatures (WIS DC 16). If there are no other creatures within a 50 foot radius then the creature that is wielding Nightblood must resist instantly impaling themselves on the sheathed blade (WIS DC 24). If a creature succeeds at the save or is of a Good alignment then they may Sheath Nightblood.

Unsheathed

You gain a +3 bonus to attack rolls made with this magic weapon. In addition, the weapon ignores resistance to slashing damage.

When you succeed on an attack against a living creature Nightblood immediately destroys the creatures soul and vaporizes the creatures corporeal form into black smoke. A creature is immune to this effect if it is immune to slashing damage, doesn't have or need a soul, has legendary actions, or the GM decides that the creature is otherwise immune. Such a creature instead takes an extra 6d8 slashing damage from the hit.

Every time Nightblood successfully devours a creature's soul, he also takes a piece of the wielder's soul, dealing 2d8 necrotic damage to the wielder.

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

Notes: Bonus: Magic, Replace Damage Type: Bludgeoning, of any alignment other than Evil, Damage, Combat, Heavy, Two-Handed