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Entei is the number one sleeper pick, true heat. 50% burn chance on Sacred Fire gets burns all over the place, teamed it with Toxic Bro to spread status and Hex Spectrier cleans up real well once status is spread around a little bit. Not sure if this team is really that good, but it's heaps of fun to use.
BL Knights team with Expanding Force + Magic Guard Life Orb Sigilyph and Taunt + SD Boom: https://pokepast.es/0b92b5c9ac3e0d02 You can also run specs + tinted lens if you want
Banded Vic plus Elec terrain v2! https://pokepast.es/94fadfa215579be0
This team is fun as hell and good too. The pleasure of doing 80% to an incoming Slowbro or Pex cannot be properly expressed with words. Vic is too fun.
https://pokepast.es/82b2bc2dd207e190 This team has been absolutely destroying people. It revolves around weavile, keldeo and regielekikid. Idk if this'll count for BL knights, but I think you should definitely use this some time. Nicknames are wack, rename themif you want lol