The Duskull 51/100 EX Crystal Guardians Reverse Holo card is a common Pokémon TCG card from the set EX Crystal Guardians. Manufactured by The Pokémon Company, this English language card features the character Duskull with 40 HP. As a Basic stage Pokémon card with a Reverse Holo finish, it is a sought-after collectible for fans and players of the game.