When you are in Weapon Form you can be broken once your hp reaches 0 and Shattered if killed.  if broken you are put in a death save state and brought into human form, you are also brought into human form if your owner dies or gets knocked unconscious.  Ego Weapons can sacrifice their own life by giving reviving their owner and exchanging their own life for it, once done cannot be undone and the Ego Weapon has only an hour left to live once the sacrifice was made.  One the hour passes the Ego Weapon shatters.

The Ego Weapon can absorb souls to strengthen its wielder, It has a maximum pool of 3 times the player level and the user can command the weapon to sacrifice held souls to use the following abilities by using a bonus action:

Soul Blast - By sacrificing [5] souls, the wielder can release a blast of energy onto a target that deals 1d8 Necrotic Damage.  Once the Demon Weapon upgrades to a higher rarity, the amount of souls and damage can be increased. [this will be updated once said rarity changes.]

Healing Soul - By sacrificing [5] Souls, the wielder can send out a ray of healing energy that heals the target 1d8 healing to a target of your choice.  Once the Demon Weapon upgrades to a higher rarity, the amount of souls and damage can be increased. [this will be updated once said rarity changes.]

Soul's Blessings - By sacrificing [10] Souls, the wielder can boost their allies' morale as a blast of spectral energy protects your allies within 30ft. of you. Once the Demon Weapon upgrades to a higher rarity, the amount of souls and damage can be increased. [this will be updated once said rarity changes.]

Armored Soul - By sacrificing [5] Souls, the Wielder can with a Reaction throw the weapon to an ally of their choice or to themselves to increase their AC by 1d6 until the start of your next turn where the weapon will return to your hand to be wielded once more. Once the Demon Weapon upgrades to a higher rarity, the amount of souls and damage can be increased. [this will be updated once said rarity changes.]

When the Ego Weapon is being wielded by the owner it cannot move and can only help guide attacks and defend from attacks via Soul Bond (can take the damage that the owner receives if it wants.)

The Demon Weapon has the ability to imbue itself with magic that increases the damage for the next minute based on the spell level that was cast upon it, along with the element that was imbued, Example:

casting a first level spell on itself will grant 1d6 extra damage to the wielder's attacks for the next minute, and the damage type is based on what spell is cast, if chaos bolt were to be cast, it would roll a 1d8 and decide the damage type based on that, if an ice knife was cast it would be cold damage and so forth. By casting a higher level spell slot imbuement it would increase the damage by 1d6 more damage per spell level.

Your ability scores each increase by 2.

Demon Weapons do not age, and while the wielder is attuned to the Ego Weapon, their aging stops as well.

Turn into a weapon when given the order by The Master. The owner of the Ego Weapon must attune themselves to the Ego Weapon.  Once attuned the holder of the Ego Weapon Gains advantage on attacks and ability checks as he is helped and guided by the Ego Weapon.

Ego Weapons when taken into human form are usually around 4"10 - 6"2.  Size is Medium

Your base walking speed is 30 feet.

You can speak, read, and write Common and one extra language of your choice. Ego weapons typically learn the languages of other peoples they deal with, including obscure dialects. They are fond of sprinkling their speech with words borrowed from other tongues: Orc curses, Elvish musical expressions, Dwarvish military phrases, and so on.