Azothane

This elegant Greatsword was forged with great care and craftsmanship using a special metal called Azonite a hybrid metal of adamantine and mitral only handled by nomadic smiths, with their perfected craftsmanship this metal can be made into a terrifying weapon. This Weapon counts as a +3 greatsword and deals an additional 2d4 bludgeoning damage as you hit with this weapon, the intricate craftsmanship hidden on its blade delivers a following concussive blow of air.      

When this weapon was being made; a certain component can be added before making this masterpiece.
You may only choose one of the following components: 

Winding: When choosing this component to add to the weapon, its attacks score a critical hit on a roll of 19 or 20 on the d20 as this weapon harbors your intense fervor in delivering precise and heavy blows. 

Quenched: When choosing this component to add to the weapon, you gain a +2 bonus to AC when wielding this weapon as this masterpiece also acts as your refuge that protects you in dire situations.

Tuned: When choosing this component to add to the weapon, you gain a +1 bonus to all saves when wielding this weapon as this masterpiece resonates with you and assist you passively.

Azothane calls the visionary warrior to turn the tides of battle with its elegance and deadliness.

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, Weapon Property: Finesse, Damage: Bludgeoning, Weapon Property: Reach, Damage, Combat, Heavy, Two-Handed, Graze