Lucky me, I'm building a Volcanion deck right now. For sure going to put this in there, and I was already thinking of maybe throwing in an Energy Reset, but now I definitely will. But now to get Leles...
Speaking of Lele, imagine this with Lele and other cards like it, including Lugia-EX, M Mewtwo-EX, Flareon-EX, etc. I know that a few of those cards will be rotating, but getting 5 Energies onto a Flareon is like, 150 damage, attach next turn and its 170. That will be KOing stuff, especially with Choice Band and maybe a Steam Up. Don't forget EXP Share too, you can use that to help keep Energy on the field, and then use Field Blower to rid of it for something more useful, such as the before mentioned Choice Band.
Oh, I love this card already.