Both Koffing or Nidoran ♂ can be used to start. If Weezing is available early, evolve and use it to tank early hits while putting energy into Nidoran ♂. If starting with Nidoran ♂, evolve it and use it to tank while dealing damage. During this time, you should be able to build another Nidoking or Weezing for late game.
Use Koga to "heal" your Weezings to continue tanking hits. Red Card can slow down any deck that requires setups. (e.g. Mewtwo ex with Gardevoir setup) X Speed can be used instead of Red Card for free early swaps.