Yea upgrading demons was just idea of top my head, but now that think aobut it i have no clue how to do it actualy

In red sand they add featuer to demons that after kill enemy stack rage ball is left on field, if you could find file where that is explained (i cant find it mentioned anywhere) maybe something would come to my mind.
About my spell idea, i can add spell.txt file just changing hell breath mana cost, dmg type from fire to poison, it`s all no problems i used already existing but when i want to add new spell slot in book i cant figure how to do it. Because spell book by default have limited spell slots, since this spell would be +1 in book i cant make it work.
And champion problem, i keep separated adventure and red sands mod, so i at this time i dont have champion in red sands but want him there(new human battle spirit is sick

so i wonder what files i need to copy from sessions/adventure_mod to sessions/red_sands_mod/atoms or whereever.