Pick & Ban Hearthstone Classes
Whatever the match format (Conquest, Last Deck Standing etc.), and if the tournament organizer enabled the feature, you will be able to select, when registering, a given number of Hearthstone Classes to play with during the competition:
Then, on the matches you have to play, you will be able to ban your opponent’s class(es) before each match.
Don't hesitate using the Match Lobby to exchange with your opponent, or leave information for the admins.