It had arrived in the morning mail while Rain was having his fourth helping of black pudding. The thin package was wrapped in grubby brown paper, whoever had sent it, had done a poor job with packaging. There was no note or any other word for that matter written anywhere on the parcel.
But Rain knew what it was, it was finally here.
With a gleeful grin he tucked it inside his shirt, looking left and right to see if anyone had noticed that Rain Alistair Miller had received a suspicious-looking package. It was the quiet sort of morning, people were staring woefully into their porridge, Rain was nearly certain he had not been spotted.
The plan was in motion. All he had to do was wait for this afternoon, after classes, when, so near to the Christmas holidays, most of the students who knew what's best for them would go outside to play in the snow. That would be when they'll strike.
The potion that turned snow into color had been brewed days before and put into several small vials, each batch charmed to be a different color. Those, and the suspicious package were taken to a hill over the courtyard, overlooking all who ventured outside. The snowballs had been prepared; a drop of the potion for each turned them into snowballs of water color. These would stick to people's stick and cloths, but were easily removed with soap and water.
Rain looked over at his accomplice as he unwrapped the package, revealing two large slingshot, which he stuck in the ground. He loaded a snowball to his, winked at the other boy waiting for him to do the same. "bombs away." He said, and just as a student came into range, fired, hitting whoever they were straight in the face with a lovely lime-green color.
He didn't wait or hesitate; he quickly loaded the next snowball and shot…