I had this idea that you could pair Dialga Palkia Legend with Regigigas Lv.X (possibly Magnezone LV.X). While Regigigas is Sacrificing away things, you could move those energies to DPL so it could use the adding prize cards attack (so you would only actually add one prize). Then when they have way too many prize cards, you can start attacking with Regigigas. I also said Magnezone Lv.X as a means of moving metal energies from Gigas to DPL and you could use either SF ones to search for DPL or attach extra energies. It's clunky, but what do you think?
http://pokebeach.com/scans/triumphant/102-palkia-and-dialga-legend.jpg
http://pokebeach.com/scans/stormfront/100-regigigas-lv.x.jpg
http://pokebeach.com/scans/triumphant/102-palkia-and-dialga-legend.jpg
http://pokebeach.com/scans/stormfront/100-regigigas-lv.x.jpg