Taking the 10-ish themes from Dominaria United's JumpStart release, and making a tight set of 5 half-decks to fit in with my "optimized" JumpStart 2020 Cube ( https://cubecobra.com/cube/overview/jmp2020tight ).

Rules:

• 20 cards each, eight of which are lands
• Use cards from the DMU JS decks (except Evolving Wilds from DMC to help with color fixing for the W, U, B, and R decks)
• Embrace the Jumpstart aesthetic by including three (3) rare/mythic cards in each deck: the exclusive one included with every deck, and two more that might have appeared in the decks at retail.