race features:
Frozen Resistance: You have resistance to cold damage.
Ice Blades: As a bonus action, you can quickly liquify and reform your hand or hands into a blade of ice. These blades are natural weapons, which you can use to make unarmed strikes. If you hit with them, you deal slashing damage equal to 1d6 + your Dexterity modifier, instead of the bludgeoning damage normal for an unarmed strike. You cannot use your hand or hands to manipulate objects while your hand is a blade of ice.
Seize the Chill: You know the ray of frost cantrip and can cast it at will. When you reach 3rd level, you can cast the armour of agathys spell as a 2nd-level spell once with this trait, and you regain the ability to cast it this way when you finish a long rest. Constitution is your spellcasting ability for these spells.