The Yu-Gi-Oh! Gravekeeper Deck Core includes 3 Gravekeeper's Recruiter, Spy, and Tombs cards from the Yugi set. These dark attribute effect cards, featuring the character Izuna, are manufactured by Konami for the Yu-Gi-Oh! TCG. The Gravekeeper archetype is known for its unique gameplay style and strategic advantages in battles, making this deck core a valuable addition for players looking to enhance their collection.