Wow, the 79th card... If I could make the 79th card for my deck, I would have it be a Major Arcana card. It would be called 'The Reflection.' The card would be a depiction of a glass-smooth lake, and a little boy playing in the water, but his reflection is that of a girl. If reversed, the card would be a depiction of a girl standing in the water, and her reflection is that of a boy. The boy would be shown smiling and generally more carefree than the thoughtful look of the girl, who is afraid of the water. Everything else is perfectly reflected and you can't tell which one is the real thing or the reflection.
'The Reflection' would indicate a few things. Without using reversals, the card itself would mean:
1- The past is coming back in a disguised form. This could be an old friend, or even a letter from an old friend is on its way. Or possibly a dark secret coming back to haunt you. A fear? A family issue? Be true to yourself in the beginning so that the past does not keep you chained from your future.
If using reversals, the card could mean two different things:
1- If the boy is on top, and the girl is the reflection, it shows that you have an active outer shell, but have something hidden inside. You are holding a secret that you hide with every inch of your body. You are an upfront person and people generally go to you for advice. The boy sees the reflection in the water, which shows who he really is inside - a scared person...
2- If the girl is on top, you are acting like something or someone than yourself. You are trying to impress someone, and will end up getting hurt. This could also mean that you are fearing something that is inside of yourself... The girl is not afraid of the water, but rather what she sees in its reflection. She sees someone - a person she never thought she was, waiting to show himself to the world, but the girl's fear is keeping that from happening.
The Reflection acts as your conscience, telling you who you really are INSIDE should be who you present yourself to other people... it could be a sign that you aren't true to yourself. Continuing to do so could keep you from growing as much as you are capable of.