Mono-Blue has always been a respectable archetype for Pauper, but it's popularity has taken off as of late due to the printing of Delver of Secrets, as well as its favorable matchup against the Goblin Storm decks that have recently dominated the metagame.
This is a pretty standard list that should be relatively self explanatory. Keep in mind that you can use Brainstorm to cheat your Delver into flipping, and Snap can be used to bounce a Spellstutter Sprite for reuse. Another frequent inclusion is Spire Golem, but that seems to be dropping off in popularity with the printing of Delver of Secrets.
Unfortunately, I don't have much more to offer on this one, as I haven't been able to pilot it yet; does anyone else have any more Insight into this deck? Discuss!