Houndoom [Masterball] #505 is a card from the Gem Pack 3 set, classified as Unknown rarity. Currently valued at $1.86, it is a collectible item for Pokémon enthusiasts and traders. While it may not hold significant market value compared to rarer cards, its unique design and association with the popular Houndoom character make it an appealing addition to various Pokémon card collections. Grading data remains limited for this specific card.