Environmental Adaptation: Arctic

Humans are versatile creatures, and can adapt to environmental changes better than most. As an arctic human, you gain the following features:

• Increase your Constitution score by 1, to a maximum of 20.
• You have advantage on saving throws to resist the effects of cold weather. 
• You can reduce the amount of damage you take from attacks that deal Cold damage by an amount equal to your Constitution modifier + your proficiency bonus.