While each spell you cast technically only nets half a spell, counter doublers or cards like Kami of Celebration that distribute counters for casting spells from exile make it a one-to-one balance
This is also sort of naturally determined by the way the colors themselves play, but the creature versus noncreature theme which sort of naturally manifested was one of the starker contrasts I think Ive seen while making these
Pikachu wears a crown of multicolored crystals in this special illustration, gleaming as if the Pokmon itself was also made of glamorous stone
Vengevine just doesn't have the impact of the things you can do with a four mana card now in the cube
3 Some tribes may need support by other ways of design, or rather you can tailor some of them to help support archetypes in your cube (my soldiers can support generic aggro, token, heroic, and probably some other things as well)
Our sets are based on Japan's sets of the same names