• 20 life, 1v1, Bo3
• 40 card decks, including leaders
• No color identity restrictions
• You can only add basic lands that match your leader's color identity
• All cards in the cube are mv <= 3
• Your leader works like a commander. It must be a legendary creature. You may cast it from the command zone. When it changes zones it can be put in the command zone instead and cast for more than its previous cost. (maybe workshop more instead?)
• There should be no way to have multiple leaders like partner or backgrounds.
• You can change your leader between games

I built this cube after playing Gwen Dekker's version (https://cubecobra.com/cube/overview/tinyleaders) at CubeCon 2024. I had a bunch of the cards sitting in cubes I wasn't playing and loved the feeling of a less combo-focused Companion cube, where you want to build a deck that synergizes with your leader that you'll have access to every game, but not in multiplayer.