Jon unfolded the piece of paper to read the letter:
Dear Jon,
If you have gotten this letter, then it must be your birthday. Contained in this box is a magical stone. Please treat it with care. It does not look much, but it has immense power.
I found the stone on my latest expedition to South America and I believe it to be of Incan origin. How it works, or where it came from beyond that, I have no idea. All I can tell you is how it works and trust you to use it wisely.
Bear with me on this next bit. I know it sounds fantastic, but trust me when I tell you that I am telling the truth. All I say is real and it will not take much experimentation for you to prove it.
While holding the stone against your flesh (I recommend just holding it in your hand as the simplest approach), simply ...
(Note to Authors: Add to the rest of the letter to specify what this new stone does and how to use it.)
