This cube has an overarching +1/+1 and -1/-1 counter theme through all colors, 2-color draft archetypes, and several 2 or 3 card combos.

Draft archetypes:

flicker + control
reanimator + control
discard + destruction
lands matter
lifegain + tokens
sacrifice + tokens
spells + looting
graveyard
go wide + equipment
card draw