Tournaments in this format are either best of 5 or best of 7.I'd like to play but can someone explain to me this whole class banning/switching thing? Coming from MTG it seems bizarre and kills my interest in competitive hearthstone. It also quadruples the barrier to entry in having a good deck.
We play best of 5. You bring 4 decks: each deck must be a different class, no repeat classes.
When you are ready to play, you meet with your opponent and tell them which 4 decks(classes) you have brought.
They then ban 1 of them to which you cannot use in the match against that player.
After the ban stage it becomes 3 decks vs 3 decks. You can pick any of the 3 decks to start the match.
If you lose, you pick a new deck with the losing deck being eliminated.
If you win, you must play the same deck again.
Match ends when you defeated your opponents 3 decks.
Hope that helps.