This card stays in play when you play it. Discard this card if another Stadium card comes into play.
Whenever an attack, PokÃ©mon Power, or Trainer card discards another player's non- Energy card from a PokÃ©mon, return that Energy card to its owner's hand. (Energy cards that are discarded when that PokÃ©mon is Knocked Out don't count.)
Shin-ichi Yoshikawa, CR CG gangs