Darkmoon cards are collectible items in the game World of Warcraft that players can obtain through various means, such as crafting or purchasing from vendors. These cards are part of the Darkmoon Faire, a monthly event that features games, quests, and unique rewards. Each card represents a different effect or bonus, and when players collect a full set, they can create a powerful item called a Darkmoon trinket. These trinkets provide various benefits, enhancing a player's abilities and performance in the game. Collecting and trading these cards adds an engaging layer to the gameplay experience.