Astrid

Astrid is a blade made by a legendary vampire blacksmith, lord Mossflower, who imbued his greatest creations with a part of his soul. The part imbued in to Astrid contained the vampire's immense bloodlust and hunger giving it sentience based on these aspects. The more the wielder wields Astrid to harm and kill creatures holding blood, the more she likes the wielder.

Dislike

Astrid grants the following benefits while still disliking you:

• You have a +1 bonus to attack and damage rolls made with this magic weapon.
• While attuned to Astrid, you can use an action to command her to fight by itself, Astrid gains a flying speed of 30 feet and attacks a target you dictate every turn taking her turn right after yours. On the start of your turn after activating this effect, roll a 1d6, on a 1 Astrid's dislike of you makes her turn against you and your allies that turn and attacks your closest ally instead. Astrid has a multiattack allowing 2 Melee Weapon Attacks using her own stats.
• Astrid gains access to 1 Blood Point per day. You gain a Blood Point after having dealt a total of 20 damage to a creature or creatures with blood that day.
• You can use a Blood Point to launch a Blood Wave, a sweeping Melee Weapon Attack with reach of 50 feet in a cone of 25 feet, make a separate Attack Roll against each creature in the area of effect, roll the same damage for each creature hit.

Neutral

Astrid grants the following benefits while feeling neutral about you:

• The weapon’s bonus to attack and damage rolls increases to +2.
• Astrid now deals an extra 1d6 necrotic damage.
• You must now roll a 1d10 whenever using Astrid's ability to fight independently to see if she turns on you and your allies that turn on rolling a 1.
• Astrid's amount of Blood Points she can hold is increased to 2. And the amount you can gain per day is increased to 2.
• At the end of a long rest, you can have Astrid change shape in to a dagger, greatsword, longsword, rapier or scimitar changing her stats to that of the chosen weapon.

Like

Astrid grants the following benefits while liking you:

• The weapon’s bonus to attack and damage rolls increases to +3.
• You must now roll a 1d20 whenever using Astrid's ability to fight independently to see if she turns on you and your allies that turn on rolling a 1. When your target is a creature with blood, you can ignore this feature for that turn.
• Astrid's amount of Blood Points she can hold is increased to 3. And the amount you can gain per day is increased to 5.
• Once per turn, whenever you hit a creature with blood, you can heal for half the damage you deal with that attack, this ability can not be used with Blood Wave.

Sentience. Astrid is a sentient neutral evil weapon with an Intelligence of 15, a Wisdom of 13, and a Charisma of 16. She can hear and see normally.

Astrid can speak, read, and understand Common, Undercommon and Elvish.

Personality. Astrid has a permanent bloodlust and wishes to be used as much as possible to kill and harm, preferably targeting creatures with blood. When not used in a while she will audibly begin to act up shouting and screaming her desires to be used in this way, if this state lasts too long she will take action herself and begin attacking anyone nearby including the creature attuned to her. This attack lasts until persuaded in to stopping or until sated (up to the digression of the DM).

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

Notes: Bonus: Magic, Damage, Combat, Versatile, Sap