Because there was so little blocking going on, and because the creatures were so aggressively costed (you won't see too many two power evasion creatures for two mana anymore much less having multiples in the common slots of each color), games tended to end on turn five
This can be somewhat effective in mono-blue where youll be drawing plenty of cards and may have excess mana to spend
With Valgavoth, every turn an opponent loses life, you draw a card
Since there's no better source than the actual emails, I'll be quoting them liberally throughout this article (in the cases where we need to reserve an idea for the future, the text will be replaced with bracketed italics summarizing it)
Solitude is maybe the best Flametongue Kavu weve ever seen
They're all flexible and can fit in most decks of those colors, however, you have to cast them with mana in order to get their abilities, which is why they're lower on this list than they could be