Frost Gnome (5e Subrace)
From D&D Wiki
Frost gnomes are gnomes that have lived in frigid climes for centuries, and are hardier than other gnomes. They tend to have bluish skin and eyes, and white or very pale blue hair, which usually resembles ice or snow in hue. They have an innate connection to magic of the cold, and tend to live in small villages in pine forests and frosty caves. They tend to keep wolves and other boreal beasts in their villages, training them to act as pets and hunting companions.
Ability Score Increase. Your Constitution score increases by 1.
Frigid. You know the ray of frost cantrip. Intelligence is your spellcasting ability for it.
Child of Chill. You are naturally adapted to cold climates, as described in chapter 5 of the Dungeon Master's Guide.