Devolution Spray is a Normal rarity card from the Pokémon 20th Anniversary expansion, identified as #79 in the Korean variant. In gameplay, it allows players to devolve their Pokémon, providing strategic options during battles. Currently, the market value of this card is $0.00, indicating it may be more common and less sought after by collectors. Its place in the market reflects its utility rather than rarity, appealing primarily to players rather than collectors.