This Sub Class is based on the character Ashe from League of Legends.(Also this is more of a concept rather than a finished homebrew so the balancing may be off)

Ice Tipped

You channel the power of True Ice through your weapons

Starting at 3rd Level your weapon attacks reduce the targets speed by 5ft till the end of your next turn

Freljordian Spirit

You gain the ability to channel the power of True Ice through a friendly spirit you have

Starting at 3rd Level You gain Ray of Frost as a cantrip and As a Bonus Action you may cast Ray of Frost from a creature you have summoned 

Avarosan Focus

You can predict the movements of those consumed by the effects of your True Ice

Starting at 7th Level You have +1 to hit against creatures for every 5ft of movement they have lost

True Ice Shots

You hone your True Ice Infusions allowing you to imbue the weapons you wield

Starting at 11th Level All weapons you use deal Cold Damage and Bypass Cold Resistance and Immunity

Avarosan Barrage

When you attack you may manifest magical missiles of True Ice to strike those who have already been taken by the Frost

Starting at 15th Level Your Weapon attacks deal an extra 1d4 cold damage against creatures for every 5ft of movement they have lost