I wish Bramblewood Paragon was white, red or black, but the fact it overlaps with +1/+1 counters (another archetype I want to support) is awesome, thanks for the tip
With that said, Delay was a pretty great card in the right shell, as having a temporary answer to a sweeper or big payoff was often the same as having a real answer
if Yveltal-EX had at least three Energy attached, it was possible with a combination of Muscle Band and Hypnotoxic Laser / Virbank City Gym to take a OHKO
Black can pluck them from you hand, white can make casting spells awkward while the best red or green can do to curtail casting is to attack the mana base
Of course, good will alone wont win you the game, so Font of Mythos will only be a good fit in decks that know what to do with the extra cards they draw (or how to punish foes for being flooded with cards)