Auril's Wake (Awakened)

Forged from Everice from the elemental Plane of Ice; this armament can take the form of any bladed weapon when summoned by the wielder. 

It has a pure crystalline appearance and is ice cold to the touch.

Communion. Auril's Wake is a tool of Auril, The Frostmaiden. This weapon is wielded by her chosen champion and allows her limited communication with them.

Auril communicates telepathically with its wielder and can speak, read, and understand Common, Primordial and Celestial.

Spellcasting. Auril's Wake grants the wielder limited spellcasting. Whilst attuned the wielder can cast Ray of Frost, using Auril's Wake as a spellcasting focus.

Dormant

The weapon grants the following benefits in its dormant state:

• You can speak, read, and write Primordial.
• You gain a +1 bonus to attack and damage rolls made with this magic weapon, and once per round it can deal an extra 1d4 cold damage to any target it hits.
• You can cast the Misty Step spell once with this weapon, requiring no material components, and you regain the ability to cast it this way when you finish a long rest.

Awakened

When the weapon reaches an awakened state, it gains the following properties:

• The weapon’s bonus to attack and damage rolls increases to +2, and the additional cold damage it can deal once per round increases to 2d4.
• When you hurl this weapon in the air and speak the command word, it transforms into a storm of dark clouds as dense hail crashes down, forming a 20-foot-radius, 40-foot-high cylinder centred on a point within 120ft of you.  Each creature in the cylinder, excluding you, must make a DC 15 Dexterity saving throw, taking 2d8 bludgeoning damage and 5d6 cold damage on a failed save, or half as much damage on a successful one. Auril's Wake then returns to your hand. This property can’t be used again until the next dawn.
• Your ability to cast the Misty Step spell with is weapon is enhanced. You can now cast the spell twice requiring no material components, and regain all expended uses when you finish a long rest.

ARTIFACT PROPERTIES

The artifact has the following properties:

• Whilst attuned to this artifact you have resistance to cold damage. Additionally, you no longer suffer from the effects of extreme cold whilst exploring.
• Whilst attuned to this artifact your Consitution score increases by +2, up to a maximum of 24.
• Whilst attuned to this artifact you are vulnerable to fire damage.
• Whilst attuned to this artifact you are unable to willingly unattune to this item.
• As your connection with this artifact deepens your physical appearance changes. You become gaunt, your skin becomes pale, and your eyes and hair become white.

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

Notes: Language: Primordial, Resistance: Cold, Damage: Cold, Vulnerability: Fire, Bonus: Magic, Bonus: Ability Score Maximum, Bonus: Constitution Score, Finesse, Vex