Kingler (Delta Species), a Rare card from the Crystal Guardians set, holds the collector's interest with its unique Water-type design, reflecting the game's focus on diverse Pokémon attributes. Currently valued at $4.58, it has seen a notable increase of 14.8% over the past 30 days, indicating growing demand among collectors. As card values fluctuate, its rarity and distinctive characteristics contribute to its appeal in the market.