Hello
piyush master here is your team:
Duraludon outspeeds 252 spe zone, goes max def for bpress and dumps rest in hp.
Glastrier bulks max spa nihilego meteor beam and adaband haxorus close combat, and rest is dumped in atk. it also underspeeds aggron for no reason lol.
Tapu Koko outspeeds base 100s, tanks max spa volcanion sludge wave and dumps rest in spa.
av entei is kinda sketchy so you can drop taunt for roost on koko to make that matchup a bit more solid at the cost of getting 3-0d by gorsola.
spectrier is also not too good, so you can add payback on glastrier and have a much worse pz matchup.
volcarona 3-0s, but u might be able to beat it with a weird rock type move on glastrier.
zeraora and heatran pretty much destroy this team tho, so here's another team that doesnt lose to this stuff:
Duraludon has the same set as before.
Landorus-Therian goes max speed to outspeed pz and also speedtie opposing landos (not sure if this does much). It tanks max spa volcanion steam eruption. rest is dumped in attack.
Alolan Ninetales tanks max atk haxorus pjab and specs necrozma and outspeeds zarude. rest is dumped in spa.
this team gets 3-0d by sylveon and phero.
tapu fini and primarina are also pretty sketchy, but i think you can do something with ninetales.
both teams have to setguess garm and probably some other stuff too like dracozolt.
trick metagross also poses a very big threat to both of theses teams, but I dont have time to make another team lol
I probably missed some 3-0s
Duraludon was pretty hard build. While it has unique typing and decent spa, def, and speed, its spd and hp are so pathetic that it doesn't have much of an opportunity to capitalize on its typing. However, it is one of very few pokemon that learn idpress and laser focus, allowing it to take out many opposing bpress mons and physical attackers including (but not limited to) ferrothorn, aggron, avalugg, glastrier, registeel, and even garm (with some setguessing).
Here are some extra Duraludon sets I made:
test 1 is the one I used in your teams, test 2 is bulked for specs necro plaser (but it will lose to LO CM lol), and test 3 is bulked for specs volcanion overheat (rest is dumped in def). test 3 can also run metal burst over flash cannon I guess. its not that good tbh XD
Merry Christmas :)