This is an Un-cube, more like an Unstable cube. The rough breakdown is 4x of every common in Unstable, 1x of every rare/mythic/uncommon from Unstable, 1x of R/M/U contraptions, 2x of every common contraption, 1x of every NEW card from Unsanctioned, then a smattering of Unglued and Unhinged cards, there is also a few lands added that are non-silver bordered.

Packs are intended to be seeded into 15 card packs: 2x contraptions, 1x land, 1x rare/mythic, 3x uncommon, 8x commons