Mostly pauper cube with 5 cycles of uncommons in each color and color pair.
All basics are snow lands!

WU: flyers, blink midrange
WB: sacrifice midrange
WR: wide aggro
WG: +1/+1 counter midrange
UB: graveyard control
UR: spells midrange
UG: ramp control
BR: sacrifice aggro
BG: graveyard midrange
RG: stompy aggro

3 color archetypes are viable but must prioritize fixing. Some more focused than others

Esper: ETB recursion, flyers
Jeskai: spells, artifact subtheme
Bant: tempo, ramp
Mardu: full sacrifice midrange
Abzan: +1/+1 counters, graveyard
Naya: Wide creatures midrange, combat tricks
Grixis: graveyard spells, flashback
Sultai: Full graveyard control, reanimate
Temur: tempo, ramp
Jund: Graveyard aggro