You are talking about luck.
One day Shahinya told her 10-year-old son is collecting a collection of the Avengers from the Kinders and he does not get Rosomach. The child already buys 3 kidders at a time, and Rosomachi is not. I went to the store with the thought of making the child happy, bought a kindergarten, opened it, and there... Well, yes, Rosomaha! She then blackmailed her son with this Rosomaha - forced him to do all the lessons.