Hearthpwn

This deck is relatively slow. There is a good chance that you will get low on health early on, but as long as they do not draw C’thun you should be fine. You want to use at least one Dragon Breeder on Ysera, as generating dream cards is really nice, especially if you get multiple nightmares (+5/+5 and die your next turn) this allows you to output some extremely high damage when Lazul starts to run out of cards in her hand. Wait for your board to be full before initiating the second part of this fight, so you should hopefully have multiple nightmares and at least 1 savage roar so you can end the second stage in 1-3 turns.