Shatterfrost warrior

Shatterfrost Warriors are cold-hearted beast that will demolish anything in its path with the power of its element. these Warriors are only heard about in myth and legend, stories and fairy-tales, only known by those that were lucky enough to survive an encounter with it. they show mastery of both strength and wisdom giving them powerful strikes and spell casting capabilities.(when you take this subclass you get resistance to cold damage. if you already have resistance to cold damage or gain resistance you will be immune, additionally you gain the element adapt:cold feat).

spells

level needed          Spells Known

        3rd:                  Armor of Agathys, Chromatic orb, Frost Fingers, Ice Knife, Dragon's Breath, Rime's Binding Ice, Snilloc's Snowball Swarm, Chaos Bolt

        7th:                  Elemental Weapon, Glyph of Warding, Hunger of Hadar, Spirit Shroud,  Summon Shadowspawn, Conjure Minor Elemental, Elemental Bane, Fire Shield, Ice Storm

       10th:                 Cone of Cold, Summon Draconic Spirit, Freezing Sphere, Investiture of Ice, Wall of Ice

       15th:                 Prismatic Spray, Illusory Dragon               

       18th:                prismatic Wall

(spells that can do damage other then cold damage cannot be used to do damage other then cold ex: Prismatic Wall has seven layers each doing different types of damage, now all the layers are the colour that does cold damage ex2: in the Glyph of Warding spell you can choose fire, lightning, or cold damage you must choose the cold damage option ex3: in the spell Chaos bolt you role a die to see what damage you do instead you don't role the die and do the cold damage version immediately.)

Chilling Presence

enemies near you can feel the intent of your heart

starting at 3rd level, You constantly emit a chilling presence. every enemy within 10 ft of you must make a Wisdom saving throw. on a failed save they become frightened of you for 1 minute. The frightened creature can repeat this saving throw at the end of each of its turns, ending the effect on itself on a success. (at 15th level this area is also icy terrain/difficult terrain).

Cold-Hearted

you loose sympathy for the ones that oppose you 

starting at 7th level you can attack with Cold Intent once per short/long rest and deal an additional 1d6 cold damage, 1d6 bludgeoning damage, and 1d6 slashing damage to any weapon attack you make this turn( this is increased to 1d10 of each damage at level 18)

Empowered With Frost

your attacks are empowered with frost

Starting at 10th level if you cast a spell as an action you can use your bonus action to make one weapon attack

additionally all cold damage you deal adds a point of chilled to a monster per instance of cold damage dealt (these points go down by three every time the targets turn ends)

chilled points 

         0-9 movement speed is reduced by 5 ft per chilled point

         10 movement speed is reduced by 50 ft and takes double cold damage

      11-19 movement speed is reduced an additional 5 ft per chilled point, takes double cold damage, and has disadvantage on damage and saving throw rolls

         20 movement speed is reduced an additional 5 ft per chilled point, takes triple cold damage, and has disadvantage on all rolls

      21-29 movement speed is reduced an additional 5 ft per chilled point, takes triple cold damage, has disadvantage on all rolls, and cant use its reaction

         30 movement speed is reduced an additional 5 ft per chilled point, takes triple cold damage, has disadvantage on all rolls, cant use its reaction, and takes 1d6 cold damage per turn

        31+  movement speed is reduced an additional 5 ft per chilled point, takes triple cold damage, has disadvantage on all rolls, cant use its turn, and takes 1d6 cold damage per turn

Encrusted With Frost

your body is one with the ice 

starting at 15th level every time an enemy attacks you they gain one point of chilled and takes 1d6 cold damage 

Additionally if you are wearing no armor your body is covered in ice and grants an ac of 16+dex bonus( to a max of 19 ac)

Master of Ice and Snow

you master the element of ice and snow

starting at 18th level whenever you deal damage you can add an additional 1d6 cold damage

additionally you can use the spell ice wind strike (steel wild strike with cold damage)