Trainer card (TCG)/Types/Stadium

Introduced in the TCG Gym Heroes expansion, Stadium cards are used to affect the field of play. When a player uses a Stadium card, it remains on the field indefinitely and can usually only be removed from play when a new, different Stadium card is played, or if another card or effect says to discard the Stadium. When the TCG Diamond & Pearl expansion was released, Stadium cards became their own class of card, separate from regular Trainer and Supporter cards. However, this was reversed upon the release of TCG Black & White, and Stadium cards once again became a subclass of Trainer cards.