Secondary Cube filled with inexpensive cards. NC's brainchild, and so it lives with him. There used to be a few signature rares (1 per archetype), but the cube is now completely Peasant.
Unlike the primary G3 Cube, it is designed to encourage drafting certain archetypes within each colour pair. Subthemes spanning shards and wedges appeared in the process of creation.
Subthemes:
May you have fun discovering synergies!