Greetings, survivors of the Witchplague! The mastery panel has been updated with a new section that shows your unlocked trinkets, and their respective card pools.
You will see your unlocked trinkets on the left as clickable, colored images, while the locked ones will appear as black and white images. The selected trinket's card pool will appear on the right side. Note, that only unlocked cards will appear here.
As an additional note, the first main content update is also in the works. It will contain a new area and a new enemy type, along with new events. We are planning to release this update next month.