I feel like the Daddy Goljan lectures (which are available on spotify) are really good review content and I specifically remember a multitude on Anking cards that pertain to these lectures. It would help if there was a tag for each of his spotify lectures so as you listen to them you can unlock the cards he talked about that already exist and POTENTIALLY even create some new cards about material he covers that arent found in the deck at this time. Just a thought!