Ice in your Veins

The blood of ancestors from Ice Wind Dales is running through your veins. You unlocked their resilience to the cold of the North and get following benefits of it:

Cold never bothers you: You have resistance to cold damage.

Know the Icy Winds: You have Advantage on Saving Throws against Cold effects (e.g. Spell Effects).

The Cold Within: When taking damage, as a reaction, you can recall the cold from the Memories of your Ancestors. An icy shell appears on your skin. You roll a D10 plus your Constitution Bonus and you get Temporary Hit Points in the height of your role. When you do so you can only do it again after a Long Rest.