Omastar δ is a Rare Holo rarity Reverse Holofoil card from the Holon Phantoms set, numbered #13. As a part of the Delta Species mechanic, it features a unique Water/Psychic typing that distinguishes it from traditional versions. Currently valued at $21.70, it reflects both its collector appeal and the ongoing interest in cards from this era. Graded copies may command higher prices, showcasing its desirability among Pokémon TCG enthusiasts.