This suspect was so horrible, make 82 GxE to 78...
Ban Shed.
Shed makes the teambuild too restrictive, you must run Sunsteel/Photon/Moongeist Beam on all your offensive pokemon, hoping to maybe kill Shed if he switch it and running Wow or Toxic on all your defensive set to not get walled by it. Insensible to hazards with Boots, it is a great improof on all your offensive wallbreaker like Darm-Z/Zekrom... Not forget the Pads Shed with Endeavor and ES who can 2HKO a lot of thing, with few viable ghost to wall it and Rocky Helmet doesn't kill Shed (With Pain Split or Pads). To kill it, you always must do a 50/50 with offensive sets, make a move to destroy one of the wall or predict the Shed switch...
So, i didn't like a lot gen8BH, Darm-Z / Zacian are so fast and hit so hard... Intrepid Sword is a dumb ability, and V-Create / Bolt Beak / Fishious Rend are so powerfull and with some coverage, you can't check wallbreaker easily...