The assignment is:
Write a story in a genre in which you do not usually write. If you like to write fantasy, write a historical fiction. If you like Science-Fiction, consider a romance. If you can't think of any specific genre that you've EVER written in than just pick an interesting one and go for it.
The story should include, or somehow make reference to:
A Four-Leaf Clover
A Severed Finger
It can be as oblique as you want, but we should be able to pick out where you are referring to each of them.