While only the greatest of heroes may withstand Magtheridon's wrath, Upper Deck Entertainment challenges you to take on the World of Warcraft Magtheridon's Lair Raid Deck. Ancient evil lurks in the depths of Hellfire Citadel. Imprisoned, the mighty pit lord Magtheridon bides his time, awaiting the day his bonds are broken so he may take his revenge ... Multiple players must join together to challenge one player who takes on the role of an ultra-powerful raid boss. Should the raiding party conquer Magtheridon, the heroes win the chance to crack open the enclosed treasure pack and reap rewards not found anywhere else! Each raid deck contains 121 cards: 110x Raid Deck cards, 10x exclusive card treasure pack, and 1x Oversized Hero card.