Goliath

[details=Base Goliath]+2 Str, +1 Con
Speed 30 feet.
Natural Athlete. You have proficiency in Athletics.
Stone’s Endurance. When you take damage, you can reduce the amount taken by using your reaciton by a d12 + Con mod. You must finish a short or long rest to use this ability again.
Powerful Build. You count as one size larger when determining carrying capacity and the weight you can push, drag, or lift.
Mountain Born. You’re acclimated to high altitude, including elevations above 20k feet. You’re also naturally adapted to cold climates.[/details]

Homebrew Additions.

Add this to Powerful Build. You are considered +1 size category larger when determining if a creature has advantage or disadvantage against you when trying to Disarm you and the like.
Mountain men. When you climb, the movement is for every 5 feet it costs you an additional 2.5 feet, rather than an additional 5 feet. You can long jump twice as far and your high jump is 6 + Strength Modifier. You have advantage when attempting to land on your feet when jumping into Difficult Terrain.