this weapon was was enchanted by its creators to give the user compliments in battle and otherwise be a somewhat overly supportive friend 

your doing great 

at the start of each turn you have this weapon you either have  guidance or  blade ward cast on you and when you miss with an attack with this weapon you gain +3 to hit with the next attack you make before the end of the current turn 

friendly conversation 

during a short or long rest the weapon provides deep and meaningful but the same time light hearted conversation at the end of a short ot long rest you gain inspiration 

insult back 

when you roll a 1 on or 20 on an attack with this weapon the target of the attack is subject to vicious mockery  ( save dc 17)dealing 3d4 psychic damage 

personality 

the blades sentience lays dormant until attuned after which it attempts to befriend the attuned creature. the personality of these weapons vary wildly though they often come of as amicable simple extroverts when first met and many tend toward introversion sticking to a single friend for a long time. the blades goal is to see its friends die happy and achieved. some older blades have depression from the passing of their oldest or best friends or when they saw their friends die in sadness.while the blades wish for other happiness if the owner proves to be disagreable the blade will shut down all its magical effects for that user and cast vicious mockery deal 2d4 damage (save dc 17) whenever they miss with an attack and will try to part ways.

setience 

the blade comes in many alignments it scores are int 12 charisma 16 and  wisdom 16 it shares senses with the attuned creature seeing exactly what it sees at all times and has 60ft telepathy to talk to the wielder and knows common and one other language often elvish or dwarven 

 

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

Notes: requires attument , Versatile, Sap