Zugzug is an orc who has been living in the enchanted caverns for thousands of years, sustaining only on ham sandwiches. Although he loves ham sandwiches, he has always wondered what other exotic foods are out there. When the boss of the caverns asked him what he desired in return for his allegiance, he wistfully replied, "Turkey sandwiches!"
Each mastery level adds another card to the cardpool for defeating Zugzug. Each of the bronze, silver, and gold mastery levels unlocks a new card, while it takes all three diamond and onyx levels to unlock a single card.