Well, the only cards that specify deacons are Philip the Evangelist and The Word Spreads, and if you have The Word Spreads, you definitely need Paramenas and Nicolas of Antioch, as well as Reach of Desperation and probably AoCP and ET. So...I would fit at least those cards in there. As to what you should use for blue, you're free to be creative...but with Philip's banding, Abraham's Servant to Ur is probably not a bad idea.