Marshtomp, a Water/Ground-type Pokémon, is featured as an Uncommon rarity card (#46) in the Great Encounters set. Currently valued at $1.40, it appeals to collectors due to its dual-type characteristics and evolutionary connection to Swampert. The card's market presence reflects its utility in both gameplay and as part of a complete collection from this set, making it a notable item for enthusiasts of the Pokémon Trading Card Game.