And I also wanted to add that
@dewadw does the right thing by not increasing the damage multiplier above x5
This allowed me to fight level 60 opponents on equal terms with my level 35 dolls. And it was interesting. The challenge was preserved. But if the damage multiplier was higher, this feeling would disappear. In addition, too high values can attract unnecessary attention from developers and they will simply fix the code, not allowing you to use these things at all.