Thunder Mountain {*} (LOT 191/214)

(Prism star) rule. You can’t have more than 1 card with the same name in your deck. If a card would go to the discard pile, put it in the Lost Zone instead.

The attacks of Lightning Pokémon (both yours and your opponent’s) cost Lightning less. Whenever any player plays an Item or Supporter card from their hand, prevent all effects of that card done to this Stadium card.