"Apprentice" lacks a rules engine; the game moves forward by the players typing out their current actions. "Apprentice" simply provides an interface that can keep track of the current phase of the game; cards in play and their current state; and cards in the graveyard. There is no concept of card ownership; players may use as many copies of a card as they would like in decks they create. Cards which interact with sideboards such as the "" "wishes" or the "Dissension" split card Research/Development are not implemented directly, and are instead usually adjudicated by creating temporary new cards on the spot.