This is a Jumpstart Style Cube, where you take two individual 20 card themed "packs" and mix them together in order to create a 40 card limited deck.

To draft, you and one other player each grab 6 random cube themes facedown. You look at those packs at the same time (do not reveal them) and choose two to pair together. Once you and your opponent have made your choices, you reveal them to each other. Shuffle your themes together and play.

Sort the cube list by tags to see each 20 card theme pack. The contents of this cube are broken down as such:

29 Themed packs in total:
3x of each Mono Colored Theme (including Brown aka Colorless)
1x of each Two Colored Guild Theme
1x Five Color

Of note, the Mono-Brown Tron and Mono-White Hammer Time lists has a Sideboard dedicated to being tutored with by Karn the Great Creator/ Wizened Arbiter respectively, the 5 Color Niv to Light deck adds an extra 20 cards to its limited deck to run Yorion, Sky Nomad as its Companion, and the Mono-Black Necro deck adds an extra 13 cards to its limited deck to turn on Witty Demon.