Unicorns are very talented animals, and their horns are very powerful. They can spear with their horn and also heal with it - it depends on their intention and the amount of force they use. Although many believe otherwise, unicorns are the second best fighters of the animal companions - just after dragons, and they are tied with pheonixes in the art of healing. Unicorns are very picky. They will not eat meat - only leaves, berries, and other herbs. They have also never chosen a companion who isn't gifted or doesn't have a pure heart.
This a very rare occurrence. Technically, you don't have an incredibly close connection with learning, but this is a sign that you most likely will.
A unicorn's most common powers are healing, , and they require a lot more training than normal - about 3 hours a day. If trained well, they will become quite skilled all categories of magic.
Can heal themselves and others
Have many abilities if trained well
Attaches to companion and will never leave them
Takes much longer to train
Not very skilled fighters
About the skill of a strong eagle
About the strength of a beaver