Goblor is a sharp looking goblin in his black suit and wing tipped shoes. An astute business man, he counts every gold piece and calculates all profit margins to the 4th decimal point. He has calculated that working for the boss will give him a profit of 59.7219%. More than counting gold and calculating margins, he loves to dive into a pool of gold coins.
Each mastery level adds another card to the cardpool for defeating Goblor. 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.