Champions Festival (SWSH Black Star Promos SWSH296)

Champions Festival

Once during each player's turn, if that player has 6 Pokémon in play, they may heal 10 damage from each of their Pokémon.

Card rule

This Stadium stays in play when you play it. Discard it if another Stadium comes into play. If a Stadium with the same name is in play, you can't play this card.