As you've likely seen, Brainscape allows you to select a Deck of flashcards to study, and presents you those flashcards in a pattern scientifically optimized to help you learn faster and remember for longer, based on your self-rated confidence ratings.
But did you know that you can also study cards from across an entire Class worth of Decks?
In the iOS app, simply open any Class, and select Random Mix at the bottom of the screen. For each Card selected to display in your study stream, the algorithm will randomly select a Deck, and will then determine which is the next best Card to show you from that Deck.
In the future, we also plan to add this feature to the website and to the Android app. We also plan to allow you to filter precisely which Decks you'd like to include in your study mix.
If you'd like to express interest in either of those things, please mention it in the Comments below, so our developers can escalate the feature development sooner!