Omastar, a Rare Reverse Holofoil variant from the Arceus set, holds the collector's designation of #23/99. Currently valued at $4.12, this card features the Fossil Pokémon known for its powerful Water/Rock typing and unique abilities in gameplay. As part of the Arceus expansion, it reflects the nostalgic elements of earlier generations while offering competitive potential in various decks. Its market presence is steady among collectors and players alike.