Set up Regidrago VSTAR by getting as many dragon-type Pokemon as you can in your discard pile. (Excluding Regidrago V and Regidrago VSTAR) You can do this by using battle compressor. You can get enough energy attached to Regidrago VSTAR by attaching a Double Drangon energy and basic energy to it. You can get these energies back by using Super Rod, Klara, or Special Charge.