Cryomancer

Your innate magical ability manifests as cold. You are the cold and the cold is you.

 

 

Winter Touched

Ray of Frost is added to your known cantrips. An addition any difficult terrain caused by ice or snow does not affect you.

Aura of Frost

At level 1 As a bonus action you can unleash your power of frost and create a 10 ft radius centered from you of ice terrain. You deal cold damage equal to your Charisma Modifier to any creature that ends its turn within the terrain. This ability can be used in an amount equal to your proficiency bonus. All expended uses recover after a short rest. 

 At level 10 the ice terrain increases to 15 feet in radius.

Deep freeze

Starting at 6th level, you gain resistance to cold damage, and spells you cast that deal cold damage ignore resistance to cold. These spells also may add your charisma modifier to the damage roll at the cost of 1 sorcery point.

Skin of Ice

At 14th level, you’ve learned to manipulate your body with the power of ice. As a reaction to being hit by a melee or spell attack, you transform your skin to be as hard as ice. Your ac becomes 13+ your dexterity modifier. The ice skin grants you temporary hit points of 3x your sorcery level that absorbs as much of the triggering damage as possible. While the temporary hit points are active you have a weakness to fire. Once this ability is used it can’t be done so again until you take a long rest.

Soul of Cold

Beginning at 18th level, you gain immunity to cold damage and spells you cast that deal cold damage treat immunity to cold as resistance to cold. An addition, spells dealing cold damage can now add 2x your Charisma modifier to the damage roll at the cost of 2 sorcery points.