Frostborne

The Frostborne sorcerers are conduits of icy power, their essence entwined with winter's chilling touch. Born of ancient frost spirits or forged through a transformative encounter with an otherworldly entity from the frigid planes, these sorcerers command the rare and unique magic of ice, cold, and frost. 

Frozen resilience

You gain resistance to cold damage. Additionally, your skin is naturally chilled, granting you an advantage on saving throws against being charmed or frightened. 

Frostborne Spells

You learn two additional sorcerer spells that are unique to Frostborne sorcerers. These spells must be cold or ice-themed and can be chosen from any spell level you can access. They are always considered sorcerer spells for you and don't count against the number of spells you can know. 

Arctic Veins

The frosty energy that courses through your veins enhances your spellcasting. Whenever you cast a spell that deals cold damage, you can add your charisma modifier to the damage roll. 

Frozen Soul

You have become one with the icy energies that empower you. You gain immunity to cold damage. Additionally, when you cast a spell that deals cold damage, you can ignore resistance or immunity to cold damage possessed by the target. 

Glacial Ascendance

You have mastered the pinnacle of frost magic, transforming you into an embodiment of glacial power. As an action, you can spend six sorcery points to assume the form of a Glacial Avatar for 1 minute. While in this form, you gain the following benefits:

• Your movement speed becomes 0, but you gain a hover speed of 30 feet.
• You emanate an aura of intense cold in a 30-foot radius extinguishing all non-magical flames and causing the area to be rugged terrain for enemies.
• At the start of each turn, each creature within 10 feet of you takes cold damage equal to your Charisma modifier (minimum of 1).
• You have an advantage on saving throws against spells and effects that would move you or knock you prone. 
• Whenever you cast a cold spell, the spell s range is doubled, and the spell s area of effect is increased by 50%