well set up pokes U need at least 3 in your team. Use variety every time. Depending on your team. Brozong gets old and he gets taunted a lot. There's claydol which I just got which is really good. Porygon2 people dont expect him as Trick rom user.
Also there's dusknoir, slowbro. It all depends and If you use trick room I suggest using pokes with lots of defence. Because youll get hit first & u need to survive to set up trick room.
For sweeping I usually explode on the turn after trick room is used. Then start fresh with a slow but Max Atk sweeper with a variety.. try machamp, aggron, camerupt etc.
Anything slow with a variety of attacks hat can pretty much KO in 1 hit.