The character grows a thick coat of scraggy wolf-like fur, which grants them advantage on Constitution saving throws made to resist the effects of cold weather. They also gain resistance to bludgeoning damage from nonmagical weapons that are not made of silver.
Unfortunately, the character also develops a painful
allergy and mental aversion to silver, which causes them
to break out in blistering rashes on contact. When
exposed to silver or in base physical contact with silver,
the character suffers disadvantage on all attack rolls and
Dexterity checks for 1 minute.