This week's brawl is Servant of Yogg-Saron Tryouts!
Help Yogg-Saron find a servant! Your deck is full of wannabes who cast a random spell at a random target when played.
Brawl has been postponed until Thursday to make sure the connectivity issues from this evening would not return.
Quote from BlizzardYea, it sounds like it might have been causing some of the stuff today so they've delayed it to give them more time to make sure it's not causing problems going forward.
A Classic Card pack.