At a remarkable 1 in 10,000, the chances of discovering a four-leaf clover are so astonishingly slim that finding it seems to require luck itself. There are a plethora of theories concerning this Celtic charm, but they all seem to make the clover worthwhile: the ability to see fairies, promise of eternal happiness and meeting your lover the same day, to name a few. While in most of the world, only the four-leafed clover is considered lucky, in Ireland all Irish Shamrocks are powerful good luck charms.