Wanted a cube. Tried to make my own out of bulk, but couldn't get consistent archetypes. Really like the AFR set's theme and mechanics with 10 archetypes available in a limited environment. Seemed like a good base to start from.
Going with the 4/2/1 Split (4 Commons / 2 Uncommons / 1 Rares + Mythics) for bulk of cube (644). Last 76 cards I'll choose Artifacts/Artifact Creatures that'll be a mix of slow ramp and extra removal options to expand the existing themes from CLB set along with 2 copies of each gainland. Shouldn't affect the overall archetype balance and hopefully help improve overall experience. End size is 720.
Archetypes are base what the set came with: