Yeah, it's mistranslated. It says something closer to "Once per turn, choose a lightning energy from your discard pile and attach it to one of your benched pokemon". There's nothing about "searching" or "shuffling your deck" in the original text.
Actually, if I read the card correctly, Wishcash should be able to do 200 damage by discarding a a double energy such as DDE. Unlike Typhlosion (which specifically states energy cards), this one only says "energies" (unless the word "cards" is just missing in this translation. Can't tell because...