Unicorns are well known for their healing powers. Simply the touch of a unicorn will cure disease and purify liquid. Even scraping powder from their horns will cure many illnesses. Unicorns live alone on large territories. Although they are calm animals, they can be dangerous if approached. Their horn is magical, but also sharp. Unicorns will only befriend those of great innocence and pure spirit.
* photo courtesy of Arthur Spiderwick's Field Guide