Regarding the two newly acquired cards, Leonard Ethan felt that the Middle Persian language knowledge on the first card was beneficial for treasure hunting and research, but it was far less valuable than the knowledge of the Fire Worshipers.
Because if he mastered this knowledge, he would have extra clues when encountering Fire Worshiper relics or cultural relics in the future, which would be helpful in digging out more information.
As for the cavalry skills on the other card, if it was placed in Leonard, who had just acquired the card last year, it might not have much use, as understanding something in the mind does not mean it can be directly operated.
However, after more than a year of adventure and multiple card enhancements, learning these combat skills may be difficult, but it is not insurmountable.