Okay so I have a pokemon with a double rainbow energy and a basic energy active. I have delcatty ex on my bench. I want to get as much energy as possible into my discard with delcatty and my active as a two retreat cost. I have read that when retreating you may discard an energy that provides more than one if it fills the retreat cost. I have also read that if you want you can discard by way of energy cards. So am I correct that I could discard the double rainbow energy and the basic energy? Edit: Thank you PokePop for pointing that out.