Have you ever found a four-leaf-clover? Well, I have found about 60 in the last 2 months. I'm finding them in 2 different locations which are not near each other. Perhaps I'd find them in other places too, but I haven't scoured the city yet. It began as a surprise as I walked my dog, then started to get a little weird.. Now I just expect to find them. I don't remember ever finding one before in my life, or even having any hopes of finding one. Now I think about them all the time and have a large collection pressed in my "Harry Potter and the Half-Blood Prince".
According to the internet, you only will find a four-leaf-clover among 10,000 regular 3-leaved clover. But I can tell you it's not completely random. They grow in concentrated areas. The four leaved clusters are attached to plants with regular 3-leaved clusters, but nearby, there will soon be another 4-leaf. Also, this has to be "White Clover"...not other clover look-alikes.