Goliath

Natural Athlete. You have proficiency in the Athletics skill.   Stones Endurance. When you take damage, you can use your reaction to roll a d12. Add your Constitution modifier to the number rolled and reduce the damage by that total. After you use this trait, you can’t use it again until you finish a short or long rest.   Powerful Build. You count as one size larger when determining your carrying capacity and the weight you can push, drag, or lift.   Mountain Born. You have resistance to cold damage. You’re also acclimated to high altitude, including elevations above 20,000 feet.

Languages. You can speak, read, and write Common and Giant.