Your strength or dexterity score increases by 2, and your constitution score increases by 1.

You count as a monstrosity instead of a humanoid.

You have resistance to cold damage and you are acclimated to extreme cold.

You have advantage on an attack roll against a creature if at least one of your allies is within 5 feet of the creature and the ally isn't incapacitated.

When you take the attack action on your turn, you can replace one of your weapon attacks with a breath weapon attack. With this feature, you can exhale a blast of freezing air in a 15 ft. cone. Any creature caught in the blast must succeed on a dexterity saving throw (the DC equals 8 + your constitution modifier + your proficiency bonus). On a failed save, the target creatures take 2d10 cold damage and half as much on a success. Once you use this feature, you can't use it again until you finish a long rest.

Your fanged maw counts as a natural weapon with the finesse property. On hit, your bite deals 2d4 piercing damage. This damage replaces the usual bludgeoning damage dealt by your unarmed strikes.

You are restricted by the animalistic shape and build of your body.

You have no hands, and therefore you are restricted from using weapons, handheld items, tools, and magic foci. This does not include the use of potions. You may wear armor if it can fit your body shape or if it is specifically tailored to you. You can be outfitted with a saddle over any armor you are wearing, and you can be used a a mount by a small or smaller creature.

Your body type isn't a complete drawback, as your powerful build makes you stronger than other creatures. When you aren't wearing armor, your AC equals 13 + your dexterity modifier.

Because of your nature, it is harder for your to learn and use the abilities that certain classes offer.

You are restricted from all classes but the following: Ranger, fighter, barbarian, and monk. Certain subclasses and features may or may not be appropriate, ask your DM before choosing a subclass. For example, a DM may be willing to lift the dwarves-only restriction on the battlerager barbarian subclass if they think that it would suit a savage winter wolf wanting to wear spiked armor, while they might refuse a winter wolf eldritch knight because of the winter wolf's spellcasting limitations.

You can speak, read, and understand Common and Giant. In addition, you can speak and understand Winter Wolf, and you can effectively communicate with wolves and most other canine creatures. You cannot write.