Can I attach an energy card of a type not specified on a card to that card? Or can I only attach the type of energy specified on that card? My question concerns Unown G, which uses Colorless and Psychic enrgy. Can I attach say a Fire or Electric energy? Or can I only attach Colorless and Psychic energy? I am assuming that as the card says you 'may discard all cards attached' you have to discard at least one card to use it as a Pokemon Tool. Also about Unown G. Can I play the card from my hand to the bench, attach an energy card to it, discard the energy card and attach it as a Pokemon Tool all in the same turn?