A mono-blue Delver of Secrets
control deck.
Obviously since this is a "Delver" deck, you're going to have Delver of Secrets
. However, since this is a mono-blue deck, you're not going to have
Steppe Lynx
or Geist of Saint Traft, but we do have a play-set of Snapcaster Mages. The aim of the deck is to be extremely controlling with counter spells and also not having to rely on top-deck fixing to flip Delver.
Turn one you should almost always try to get out a Delver.
Our permission sweet consists of Mana Leak, Remand, Spell Snare, Cryptic Command and Rune Snags. Mana Leak will be the most commonly used counter. Use Remand over a leak when you are running low on cards. Spell Snare is obviously a nice counter against removal or anything during the second and third turns. Cryptic Command is just a killer value card. You can use it to bounce and draw, or counter and bounce or counter and draw, or stay alive for that one turn you need to win.
The two win conditions of the deck will obviously be Delver of Secrets
and stealing something with Vedalken Shackles.
Echoing Truth and Vapor Snag can be used to recycle your Snapcaster Mages or just simply protect them. Otherwise in most cases they will be used to control your opponent's board and to be followed up by a counter, or to be used to take out token decks and twin.
Side in Negate against control decks and
Annul
against something like Affinity. They usually replace one or two Mana Leaks. Use Cyclonic Rift against slower decks so you can do massive board-wipes on their end-step.