Tonight’s a blue moon. I had no idea the phrase "once in a blue moon" came from somewhere. Or, I should say, I never considered where it came from. You can read all about blue moons here.
On the night of a Blue Moon, the magical energy is powerful and enduring. Spells cast during a Blue Moon are said to hold until the next one.
So if you wish on a star tonight, wish for something good! What would you wish for? If the rules were that it had to be something special for you and just for you, what would you wish for?