Garchomp: Put the rocks or if the foe is OHKO-able Eq. Flamethrower for skarmory.
Weavile: Fast boi, Late game sweep. Get sword dance if possible.
Cofagrigus: Main defencive bulk. Will-o-wisp + Hex combo. Haze if opponent tries to set up.
Blissey: Main special defencive bulk. Toxic stall. Block for opponent stalls. Flamethrower for ferrothorn,skarmory or incoming scizor.
Scizor: U-turn for momentum. Bullet punch to clear low hp pokes.
Conkeldurr: Main offensive pressure. Drain punch+mach punch for most of the things. Facade for those who resists. Ice punch for dragons and flying. If ghosts switches in switch to blissey ( mostly ghosts are special ).