Awakened Howl

Howl is a +3 longsword. Made of exceptionally light and flexible metal, this sabre-like longsword has an angular bell-guard and hilt protecting a worn leather-wrapped handle. Its blade has a blackened, corroded section along the end 1/3rd of the cutting edge.

Magical Construction: This weapon is a Finesse weapon, despite its relatively large size. In addition, the frigid mountains in which the sword was forged lend their fierce climate to the weapon. Whenever you strike a creature with this weapon, it takes 2d6 extra cold damage.

Cold Snap: As an action, you can call upon the howling winds of the vast mountain of Malbolge to freeze the area around you.   Frost billows around you in a 30 ft radius, and all creatures in the area must make a DC15 Constitution Saving Throw, taking 5d6 cold damage on a failed save, or half as much on a success.  This blast of cold energy also extinguishes any open flames in the area. For magical flames, make a Spellcasting Attack roll against the spell DC that created the flames, on a successful “hit” they go out. Additionally, you may make a melee weapon attack against one creature you can see within 30 feet of you. On a hit, you teleport to a space adjacent to them, and deal the melee attack as normal. On a miss, you remain in your space.  You can use this feature a number of times per day equal to your Intelligence modifier.

Awakened Weapon: Howl is a sentient weapon, with an intelligence score of 13, Wisdom of 12, and Charisma of 18. It has hearing and darkvision out to a range of 120 feet.  The weapon can speak, read, and understand Common, Undercommon, and Infernal, and can communicate with its wielder telepathically, although it does so infrequently.  Its voice is commanding and sometimes condescending, but calm.  While you are attuned to it, Howl also understands every language you know.   Howl contains a fragment of the soul of Brontanna Serpentbend, legendary Heilagur Vordur Eldritch Knight, which was awakened when the weapon was used in protecting a Heilagur Vordur member from certain death.

Magic of the Freezing Wind: Howl contains a fragment of Brontanna's cold magic. It has 7 charges, and regains 1d4+3 charges daily at dawn. You can use an action and expend one or more charges to cast one of the following spells (DC 18) from it:
Counterspell (3rd level, 2 charges)
Ice Storm (4th level, 3 charges)
Cone of Cold (5th level, 4 charges)
Freezing Sphere (6th level, 5 charges)

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

Notes: Damage: Cold, Bonus: Melee Weapon Attacks, Damage: Melee Weapon Attacks, Versatile, Sap