It’s important to ensure you only allow Water and Lightning energy for this deck and not Dark because you won’t be using it for Koffing and Weezing. They’ll act as decoys to tank hits while ...

The goal here is to immediately put Koffing/Weezing as your active Pokemon, as they're cheap and tanky, so Mewtwo can sit on the bench and slowly be charged with energy - then you use Koga to ...