This is meant to be a jumpstart cube, with each pack representing a feature of the D&D universe.
It will be composed of multiple pre-made packs, and the player will picks 2 and the deck will be ready for play, with lands and all.
This is meant to work with beginners and non-MTG afficionados, so I expect the games to be simple, but still interesting and engaging, and the set-up to be fast and to already put the player in a storytelling vibe with the 2 halves he chooses ("Tiamat allies with zombies to conquer all")