I have a great coldnsap deck. rimefeather owl is like THE ****. It's automatically already a 8/8 flying if you have all snowlands out. If you have an entire snow deck he could easily be a 13/13 flying creature for a mere 7 mana. However, my fave block is either Ravnica or Lorwyn. i always lvoed the fighting guilds and magical creatures. Worst edition is kamigawa. Did you know they had over 200 legendaries 9including artifacts, lands, and creatures, and enchantments). That was the most BS block ever.