One of the most popular and famous of all legendary creatures, the Unicorn, a particularly beautiful creature, once flourished widespread throughout the Northern Hemisphere during pre-Medieval times.  Its long, sharp, twisted horn growing from the middle of its forehead was a fearsome weapon, as the Unicorn was a very fierce and aggressive animal which could outrun any other creature of the plains or forests.  Unfortunately for them, their horns were also in extremely high demand, as they were considered magical talismans against poison.  The general belief was that a drinking chalice fashioned from a Unicorn's horn would render any poisonous liquids drank from it, non-toxic.