If the one-mana cantrips were around, combo would be even more consistent and, because of this consistency, probably a bit faster as well, which would push decks toward playing or splashing blue, just for the power of Preordain and Ponder, and the diversity we see today would be greatly diminished
Roughly 2,4002,600 new ones are introduced each year
Most times that you play a black white deck you are basically playing a mono archetype and splashing a few power cards from the other
Emma Handy said it all right here last week, so I wont spend too much time repeating her argument in detail, but to quickly recap: Vivien, Monsters Advocate compares favorably to current top-tier green planeswalkers like Vivien, Arkbow Ranger and Nissa, Who Shakes the World