A new Tavern Brawl chalkboard has been datamined that appears to be the return of Brawl Block!

Brawl Block is a special type of Tavern Brawl that greatly restricts your deckbuilding. We've seen restrictions on certain card sets and card rarities so far. These types of brawls first debuted last year and we've seen 4 of them show up so far, likely thanks to them being a community hit. The blocks we've seen so far are:

With some new art datamined in the client, it looks like Blizzard will introduce a Brawl Block specifically aimed at adventures in the future. This brawl is named "Brawl Block: Feeling Adventurous"

The art itself suspiciously showcases only Galakrond's Awakening assets, but it wouldn't make sense to only do a brawl with only that set seeing as it is quite limited. What do you think the brawl will be about? Will we have set restrictions? Perhaps some old heroes to build around.