Got to like 1300 today with these 2 teams:
https://pokepast.es/334b64c1e367d77c:
Spikes + gliscorregigigas/Genesectgarchomp offense + banded Dnite and regen core, last move on genesect can be whatever
https://pokepast.es/d260b1444cfa3899
Spikes + kyogre/zekrom/sub DD gyarados-hooh, changing toxic to SD on hitmontop-garchomp works as well
https://pokepast.es/334b64c1e367d77c:
Spikes + gliscorregigigas/Genesectgarchomp offense + banded Dnite and regen core, last move on genesect can be whatever
https://pokepast.es/d260b1444cfa3899
Spikes + kyogre/zekrom/sub DD gyarados-hooh, changing toxic to SD on hitmontop-garchomp works as well