So I'm playing the single-player campaign and unlockind cards and decks on the process, but when I try to play Two-Headed Giant locally, my friend, who is using a "Guest" profile (set by default), only has Chandra and Garruk decks to choose from. That didn't happen in 2012, other players didnt't get to unlock cards on multiplayer games but at least they could choose from all unlocked decks. What am I missing here?

Any luck with this?