The library is a deck of cards in Might & Magic: Duel of Champions. The deck, aside from hero and event cards, can be consisted of: * * * * The deck also consists of a and cards, but they cannot be drawn. Instead, they are placed on the battlefield and cannot be removed. Each deck must have exactly 1 hero card and exactly 8 event cards and at least 50 cards of any other type. The type of card is restricted, depending on the hero's magic schools and factions, although cards of neutral type can be placed into any deck. The hero can place multiple copies of the card in the same deck.