Path of the Freljord

Literally Volibear

Chosen of the Storm

The storm itself has chosen you to do battle in it's name. You're infused with it's power and staved from death. When you drop below 1/3 of your hitpoints, you will regain 1/3 of your hitpoints at the end of your next turn (or after 6 seconds).
This ability resets after a short or long rest.

Polar Bear Avatar

Being in the form of a polar bear, you have increased physical power and combat capabilities. You gain the Keen Smell and Multiattack attributes, +1 health per level of barbarian, resistance to cold damage, and a claw attack.

Keen Smell 
You have advantage on WIS (Perception) checks that rely on smell.

Multiattack 
When you choose to take the attack action on your turn using an unarmed attack, you can attack twice with the same unarmed strike.

Claw 
Swing with your claws for an unarmed strike that deals 1d4+STR magical slashing damage.

Rolling Thunder

Utilizing your command over the powers of the storm, you embue yourself with enhanced speed and might. As an action, double your movement speed while moving toward enemies. If you are within melee range of an enemy before you run out of movement, you must use your next attack action to throw the enemy 5 feet behind you. After this attack, you can use Majestic Roar as a bonus action.

Bite

Attack an enemy with a bite attack, dealing 2d10 magical slashing damage + 1/3 of the target enemy's missing health as force damage.

Thunder Claws

Once per week, while raging, you can activate Thunder Claws. Once activated, all Claw attacks deal an additional 1d10 lightning damage to their target until the end of your next turn. This additional lightning damage also jumps up to 7 times to targets of your choice that are no more than 10 feet away from each other. The damage jumps from one target to the next, and cannot hit the same target twice.