Set up a toxicroak and poison your opponent with Brute Bonnet or a hypnotoxic laser. Muk, Dragalge, and Dust Island ensure that your opponent's Pokemon stays poisoned. Boost your damage with Croagunk's poison up (which stacks!), courtesy of Shining Celebi's ability: time recall.
Some of the changes that I am considering: staple two-prizers for setup, more supporters or supporter searches, fewer basic searches, switching current tools for Float Stone or Poison Barb, Koga's trap or Virbank City Gym, switching to PAL Croagunk + Strong Energy, and ditching Celebi, more switch cards, or adding more energy.
v1.3