There is a predetermined way for it to choose a skill................it's never the one you want it to 😂😂😂
https://plarium.com/forum/en/comment/topic_834174/
They designed it this way because they want you to spend money even on skill books. Whole game design is based on rng (before strategy) to poke your gamblimg instincts. I never see a gacha game aiming this much monetization. Such a shame! They waste potential of this beatiful game with a short shighted thinking. I believe they are not aware of long term succsses and profit this game can bring to the company if they don't behave like this.