how does it work? do i need to put these ninjas on team in order for the attribute bonuses to work?

or i dont have to put them on team, and simply just have to be "water main"to avail of bonus from Mei Terumi, and ëarth main"to avail of bonus from Onoki?

so the nin, resis, attack, def bonuses given by each ninja doesn't add all up?

the only thing that adds up in total are the "maps" attributes that looks like myoboku stat bonuses?

hope someone can clarify... or Ice?