@drahax the hardest grind is rank 5-3. from there on you often face low legendary players who are making fun decks and shit. as for deck swapping i recommed you use one deck that you like to play the most and the one you think you've mastered. at 1 loss, take a deep breath and queue up. at 2 losses in a row, 10 minute break. at 3 losses I either call it a day or take a 30-60 minute break depending on my salt levels.