Weapon (greatsword), legendary (requires attunement by a creature with 17 or more Strength)
Raserei is a massive, 7 foot greatsword that calls itself a Zweihänder. It is forged from a dark grey metal that is tinted red by dried blood. A feeling of awe and terror embeds itself in the minds of those who face it's power.
You gain a +3 bonus to attack and damage rolls made with this magic weapon. It has all the functions of a vorpal weapon, as well as the following additional properties.
Absolute Terror Field. As an action, you may command Raserei to cast the spell fear, with a Spell Save DC of 19. This ability can only be used once, and this weapon regains use of this effect at dawn.
Reap. In place of an attack against one target, you may attempt to sweep the scythe in front of you. If two creatures are next to each other and within range, you may attempt to hit them both. Roll a single attack roll against the targets at disadvantage. If you hit either of the targets you don't add your Strength modifier to the damage roll of the attack.
Magic Users Bane. When you hit a creature that is concentrating on a spell or another effect with this weapon, the target creature has disadvantage on checks made to maintain concentration.
Sentience. Raserei is a sentient neutral evil weapon with an Intelligence of 15, a Wisdom of 15, and a Charisma of 10. It has hearing and darkvision out to a range of 80 feet.
The weapon can speak, read, and understand Common as well as Abbysal, and can communicate with its wielder telepathically. While you are attuned to it, Raserei also understands every language you know.
Personality. Raserei possesses the soul of a middle aged knight from a past age and a distant land. Raserei has little regard for rules, oaths, or strategy.
Raserei is somewhat crass in general. It has no respect for any form of authority, and will get annoyed if someone talks for too long about nothing that directly relates to combat, saying things like "Ugh" "Hurry up" "Shut your trap" or even "Just kill this meat-bag"
Unsurprisingly, Raserei has a downright disturbing love for combat, from the air of tension to the clashing of steel, Raserei loves nothing more than to be wielded in battle. While this seems to be a non-issue, if Raserei goes 10 encounters without encountering a type of enemy it has not seen in a month, it will engage in an argument with it's wielder at sunset that night.
It also enjoys delving into large and expansive ruins and dungeons, but dislikes a lack of progress. Depending on the size of the dungeon, if not enough progress is made in 1-3 days, Raserei will complain about it that evening.