Gastly, a Common rarity card from the Expedition Base Set (#109), features the Ghost/Poison-type Pokémon known for its eerie presence. With a current market value of $2.23, this card holds appeal for collectors and players alike due to its nostalgic connection to the early days of the Pokémon Trading Card Game. Its availability and modest price make it a suitable addition for those looking to complete their collections or enhance their gameplay strategies.