Hearthpwn

The main idea of this deck is to confuse your opponent with three quests in his hand and force him to go for full mulligan while you go on your own and complete Rise to the Occasion. From what I've gathered if opponent goes first or has a quest of his own, he'll mulligan his hand (or play the wrong quest) 90% of the time, if he goes second, it's about 50% chance (because he wants to see which quest to play), but let's not forget you'll still have hero power advantage at start of the game and only you benefit from final questline reward.

Start of Game effects work wonky in this brawl and we take advantage of that. It seems like Baku the Mooneater checks your deck before it's shuffled with your opponents but Nozdormu the Eternal, on the other hand, checks both decks after they're shuffled together. This results in only you getting upgraded hero power and big N's effect still triggering.

Disclaimer: I just happened to have all 3 quests in my collection. No sane person would recommend crafting them just for this brawl, but if you do have the required cards I highly recommend giving this deck a go. :)