User with this ability either is or can transform into a Divine Beast, either an animal of divine origin or a Deity that is permanently in animal/beast or near-so form. Many Divine Beasts are literally Super Natural: natural animals written large, with vast size and/or their natural abilities enhanced to supernatural levels, some aren't even intelligent. Generally speaking, Divine Beasts don't die from natural causes, like age, disease, etc, don't grow weaker with age and have to be killed, often using specific means. Some have supernatural powers, usually ones dealing with nature and natural forces, especially destructive ones.