Dark,shiny,mettalic Bronzong,Magneton atleast 3 paralyzing electric moves,fairy pokemon Zacian just some fairy type moves dark and shadow variants,Dark victini,Dark or mystic eternatus,Normal or Dark necrozma
the last two pokemon I mentioned are the ones that are going to finish off the rest of the pokemon since there OHKO the necrozma in a dark variant does 500 damage idk about the eternatus though but its enternabeam move does a lot of damage
zacian I would have on the team bcz it might get updated to its other form which fairy and steel which will will be very helpful on sidequests
manegton I would have because it paralyze and set up your attackers or strongest pokemon to one hit the sidequests teams and bronzong is just there because its a steel type