Always burdened with never ending chores. Peter had no time to practice necromancy, watch cartoons, or take long naps. He devised a plan to create an undead army to do his evil and lazy bidding out of necessity. Once he has his unstoppable undead legion, they will terrorize the town while picking up his dry cleaning and groceries.
Each mastery level adds another card to the cardpool for defeating Peter. 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.