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I think Shuckle needs a suspect. I've been having lots of success with it. My team is as follows:
Shuckle (king of stall)
Talonflame / Pikachu (priority revenge killer)
Tentacruel (toxic spikes + spin)
Ditto (set up punisher)
Alomomola (wish passer)
Giratina (standard great wall)
Most thing...
Petition to test Block and Mean Look, or with Acupressure.
Topsy Turvy requires Prankster + Luck to check this strategy. This can me done with any mon with a trapping move or acu.
http://replay.pokemonshowdown.com/sketchmons-267730407