Blackrazor

Blackrazor is a sentient great sword with a hunger for living souls. The party acquired it after defeating the half-orc warlock in White Plume Mountain. It is currently wielded by Lusctarius. It is always hungry for souls of the living.

Abilities

 * +3 soul-devouring greatsword
 * When a soul is devoured, it grants its user temporary hit points equal to the slain's hit point maximum (lasts 24 hours)
 * as long as these hit points last, and you have Blackrazor in hand, you have advantage on attack rolls, saving throws, and ability checks
 * While you hold this weapon
 * you are aware of all Tiny and larger creatures within 60 ft (that aren't constructs or undead)
 * you can't be charmed or frightened
 * Blackrazor has
 * darkvision and hearing out to 120 ft
 * the ability to cast haste on its user once per day. It chooses when to do so and maintains the concentration