Bluetracker
Tracks Blizzard employees across various accounts.
PSA: If you put Fae of Wishes in your brawl deck, you will be allowed to put a non creature card in your side deck. But if you try to play you will be stuck in the "waiting for server" screen forever.
The game says to you that is a brawl legal deck but if you select it to play you just get stuck.
Wizards Jay
Being able to add cards to a Brawl sideboard is a bug. The update we put out this morning should have fixed this.