Constructed

Constructed is a term used to refer to decks which have been created using cards from the player's collection. Constructed play is play in either Play mode, Practice mode or Friendly Challenge. Some Tavern Brawls also use constructed decks, but due to the special rules and effects in play, are not usually referred to as constructed play.

The term is used to contrast with Arena play, where each player's deck is built from randomly selected cards. Constructed is the basic type of play for Hearthstone.