National Dex Attempted cooking from an sv Ubers main, help in improving would be greatly appreciated

[Pigbeeef]

So here I am again, trying out a new format, using my somewhat decent experience from sv Ubers and trying to play this format with a BO team. This team is just attempted cooking so if any of you guys can help make it better, please do. Just keep defensive darkceus.
This is the paste : https://pokepast.es/6d7fffdb82305073

the must have for many teams, deals 999 damage with minimal investment and can do everything. Sets rocks for the team too and can break and check many staples.

main sweeper here I guess, it has problems with stall tho so I brought psyshock to deal with that. Tera ghost to block ekiller.

a defensive backbone of this team, shits on many physical attackers and checks yveltal to an extent. Wisp to mess up physical attackers and other moves are pretty standard.

a breaker for this team with swords dance and sunsteel strike, can be a Xerneas fail safe when needed but it’s kinda shaky.

another sweeper to help me make this team work, roost allows this thing to stay alive and stuff. Can intimidate too.

the defogger and priority of this team, checks most pdon sets but struggles with Xerneas.

this is just attempted cooking if you think this team is bad, you are probably right, so please help.

 

[Pigbeeef]

I have experience in SV Ubers, just so you know, but natdex is def different from sv as there are no koraidon/miraidon, hope somebody can respond soon…

 

[Zest of Life]

So here I am again, trying out a new format, using my somewhat decent experience from sv Ubers and trying to play this format with a BO team. This team is just attempted cooking so if any of you guys can help make it better, please do. Just keep defensive darkceus.
This is the paste : https://pokepast.es/6d7fffdb82305073

the must have for many teams, deals 999 damage with minimal investment and can do everything. Sets rocks for the team too and can break and check many staples.

main sweeper here I guess, it has problems with stall tho so I brought psyshock to deal with that. Tera ghost to block ekiller.

a defensive backbone of this team, shits on many physical attackers and checks yveltal to an extent. Wisp to mess up physical attackers and other moves are pretty standard.

a breaker for this team with swords dance and sunsteel strike, can be a Xerneas fail safe when needed but it’s kinda shaky.

another sweeper to help me make this team work, roost allows this thing to stay alive and stuff. Can intimidate too.

the defogger and priority of this team, checks most pdon sets but struggles with Xerneas.

this is just attempted cooking if you think this team is bad, you are probably right, so please help.

At a glance, the biggest weakness this team has is a lack of a long-term check. Since Tera Geomancy is the single-most dangerous threat in the tier, I don’t think PDon + Ultra are enough to deal with it. You may be better off running a SD + TR set with either or a Specially Defensive support set with Tera Ground on it. Your should be more Specially Defensive to tank hits, as well. Good luck!