It's Randomonium again. But this time I have been absurdly lucky: I played 6-7 times, with different classes, and I won every single time. The last opponent was a Druid who played turn 1
Astral Communion. I think it's a bad move in this format since all cards cost less on average so your starting hand should be more valuable than having 10 mana from the start.
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EDIT - December 30th: New week, old brawl, and I paid the luck I had last week: it took me a lot of tries in order to get my pack. The "boss hero power" brawl can be exploited with the right cards, and this gives an advantage to people with a good collection. But even without exploiting (I actually saw only 1
Frost Giant and very few inspire cards from my opponents), most decks that are good on ladder are good here as well, and that's the recipe for a boring and frustrating brawl.
Here's what I did: I made a Druid deck with 2
Savage Roar (in case a lot of my tokens survive) and a good amount of fatties (in order to have more chances to summon them through the Grim Guzzler's hero power), then I tried and tried and tried until I was lucky enough to win. The tokens flying around also make
Volcanic Lumberer not too bad... unfortunately, the only time I got to summon it with a good discount it got BGH'd immediately.
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EDIT - January 6th: There's a new brawl this time. You build a deck (which will always be a "-1" for me) and at the start of your first turn, you choose a permanent buff which rewards you for using deathrattle minions, battlecry minions, Murlocs, or spells. Deathrattle and battlecry minions get +1/+1 if you choose the relative bonus; with the Murloc bonus you get a 1/1 Murloc at the start (or end, can't remember) of your turn; with the spell bonus you get 3 armor each time you cast a spell (the worst one imho). I found it to be a very boring brawl because deathrattle seems by far the most powerful option, so almost nobody chooses anything else. I played all my matches with the deathrattle bonus and I have never lost against other bonuses: I only lost against deathrattle decks that were better than mine.
Nerubian Eggs that start as 1/3s are really powerful.