Frostbeard Dwarf (5e Subrace)
From D&D Wiki
A mysterious race, nobody knows the origin of the frostbeard dwarves' powers. What is known is that frostbeards are more in touch with the magic of the world around them. Frostbeards typically live on and in mountains in colder regions of the world. Frostbeards and firebeards are two rival offshoot clans of mountain dwarves.
Ability Score Increase. Your Wisdom score increases by 1.
Frost Resistance. You have resistance to cold damage.
Frostflash. You know the ray of frost cantrip. Wisdom is your spellcasting ability for this spell.