The Stolen gift will give you the ability to Discover a card that is either of your class or your opponent's, depending on which gift was destroyed. Killing a gift on your opponent's side of the field gives you cards from their class.
Crazed Alchemist is great for triggering the gifts on your side of the battlefield.
As part of the launch celebration, you'll earn a free card pack when you win your first game of the week in the first several brawls!
So before Tavern Brawl launched this was posted in the info for it - http://us.battle.net/hearthstone/en/blog/19508176 - So honestly noone should complain about the lack of a pack for what was always supposed to be a casual mode for people to enjoy. I expected the free pack to stop around the time we started getting repeat brawls, and who knows, maybe the packs will return after the holidays are over. Although no doubt, given people these days there'll be someone complaining that they now aren't getting free card backs.
Hmmm. I was kind of hoping they were going to be like a lot of developers and for the holidays give something bonus; not sort of take away :( I'm not complaining, per se, but it just feels like a missed opportunity.
Somehow I think this might be the worst brawl yet; it's so luck based! Whoever pops the first crate has such an advantage and it just snowballs. Playing a mysterious challenger for 1 mana (even as a Warlock) is ridiculous.