User can turn into a unicorn

Pros:
-user can do magic
-user will have soft hair
-user is naturally tall
-user is strong
-user will have good balance

Cons:
-user can't control magic well
-horns will get in the way
-user's hair will be hard to care for
-user will need to watch doorways
-user will need horse shoes for hooves
-user can't control strength well

Weakness: darkness
User will weaken and will be in constant pain