Good thing I have though, as my thoughts about this list have changed quite a bit over the last handful of days
Its partially because there are better things to be doing in mono-blue (if you want to focus on fast consistent wins, that is), but I do think Cosima can offer a lot, particularly if built around
In contrast, the simple beauty of Gardevoir ex #233 is peaceful, and almost as gorgeous as the aforementioned Bubble Mew
Spike Suit means your Challenged or Challenging characters use their Willpower, rather than Strength to deal damage
What really has me hyped up is Ravnica: Clue Edition
Whenever you attack with them, you can search your library for an Enchantment with a mana value of three or less and put it into play