It is a card battle game of good magicians against bad magicians and demons. It is a game in which the player represented by merlin fights against demons, evil wizards using cards from a personal collection. The goal is to defeat the opponent by crafting custom decks that exploit card synergies. A deck is a set of cards that players can use throughout the game. The most optimized decks will try to take into account the randomness of the game as well as the opponent's actions. During the game the players take turns and perform actions related to the game.