This is basically just a thought experiment that I've had more fun with than I expected. Sometimes there's only two people to draft with and I wanted to try Grid draft. You only need 162 cards to Grid draft, so I thought about making a cube solely to be Grid drafted. 162 cards seemed like it would get old too quickly, so I added another 50% of that to the cube size and arrived at the extremely random-looking number of 243 cards for this cube.

Once I decided this was going to be a novelty/thought experiment cube, I thought about a Duel Deck-style cube built around the age-old rivalry of Red vs Blue and here we are.