Thanks for the input, phaedrus. These are some pretty good looking decks. Some good uses of quint. I basically agree with what LifeLockable said -- precogs would probably fit better in decks that small: unless you can fit in an eternity to juggle a creature, the decks run out too quickly to make much use of the extra draws. Making that switch also allows you to change your mark or potentially add other cards instead of precog. Another possible option is making the decks larger, in which case I would strongly recommend using upped hourglasses. I also think the devo lock deck doesn't get enough denial out early.