Path of Winter's Bite

Usually haling from snow-covered, cold regions, Barbarians who follow the Path of Winter's Bite are filled with a deep reverence for the power of winter and a cold fury for those who would ignore or underestimate its danger. They have submitted and adapted to the winter, allowing them to draw on its snow and wind for added strength and ferocity. Most actively worship and serve deity of winter or cold, but some do not need any object or focus for their devotion, the cold season is enough. Barbarians of this ilk may seem calmer and more in control than some others, but their rage is no less furious and deep. They know that a snow storm may seem calm and even beautiful from a distance, but those caught in the middle of it will soon regret not being more prepared. One who follows the Path of Winter's Bite becomes a blizzard, full of harsh, remorseless savagery.  

Blizzard's Touch (1d4)

Starting when you choose this path at 3rd level, your weapons become imbued with icy, magical energy. While you’re raging, the first creature you hit on each of your turns with a melee weapon attack takes an extra 1d4 cold damage.

When you reach certain levels in this class, the damage you can deal increases: to 2d4 at 6th level, to 3d4 at 10th level, and to 5d4 at 14th level. 

Icy Veins

You gain resistance to cold damage, and you don’t suffer the effects of extreme cold, as described in the Dungeon Master’s Guide.

Blizzard's Touch (2d4)

Starting when you choose this path at 3rd level, your weapons become imbued with icy, magical energy. While you’re raging, the first creature you hit on each of your turns with a melee weapon attack takes an extra 2d4 cold damage.

When you reach certain levels in this class, the damage you can deal increases: to 3d4 at 10th level and to 5d4 at 14th level. 

Rime Guide

You cannot be surprised while in cold, wintery environments*. Moreover, you also gain advantage on the following skill checks while in cold, wintery environments*: Athletics, Investigation, Nature, Perception, Stealth, Survival.

*Consult with your GM to determine when this applies, some examples would be tundra, high mountains, snowy woods, or just somewhere in the grip of winter, natural or magical.

Blizzard's Touch (3d4)

Starting when you choose this path at 3rd level, your weapons become imbued with icy, magical energy. While you’re raging, the first creature you hit on each of your turns with a melee weapon attack takes an extra 3d4 cold damage.

When you reach certain levels in this class, the damage you can deal increases: to 5d4 at 14th level. 

Wintery Retort

Once per day, while you are raging, when you are hit with a melee attack but before you take damage you may use your reaction to call upon the fury of winter, causing a protective magical force to surround you, manifesting as a spectral frost that covers you and your gear. You gain 25 temporary hit points for 1 minute. If a creature damages you with a melee attack while you have these hit points, the creature takes 25 cold damage.

Blizzard's Touch (5d4)

Starting when you choose this path at 3rd level, your weapons become imbued with icy, magical energy. While you’re raging, the first creature you hit on each of your turns with a melee weapon attack takes an extra 5d4 cold damage.

Glacial Fortitude

You gain immunity to cold damage. Moreover, if a hostile source would deal cold damage to you if you were not immune, you gain that many hit points.