Mono Blue Tempo is a prime example of a deck that does not mess around. You play a cheap creature, counter anything of relevance, and peck your way to victory. It’s unfortunate that a budget deck has to have some rares, but you may have noticed that there isn’t an updated version. Well, you don’t really need one!
The only change you could make is shaving some Brineborn Cutthroat or Spell Pierce for Brazen Borrower and some Otawara, Soaring City over an Island or two, but this is the closest to complete out of all of the decks on the list! That said, this isn’t the most competitive Mono Blue deck either, so if you want the best form of Mono Blue, even if it looks different, you have to go with Spirits.