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...