A very simple mill deck. Since Cypher is quite hard to build around in block constructed, I decided to do an control mill around Abomination.
Codex Shredder It's quite good at first turn to start milling and can return cards from the grave at late game.
Consuming Aberration By far the most powerful card on the deck, can kill anyone at one hit after some game, helps to block and mill at every spell cast.
Duskmantle Guildmage The alternative win condition, it's first ability can finish someone off at late game.
Mirko Vosk, Mind Drinker
It's a good flyer that can mill quite hard, however dies very easily and is somewhat fragile to a five mana.
AEtherize Can return all attackers to opponent hands, in a incredible defensive deck such as this, it's an amazing card.
Cyclonic Rift My god this card is good.
Dimir Charm
Can kill little creatures (mana generators), can counter sorceries and can even dictate what your opponent will draw next turn (or even yourself if that mana or finisher is what you need!)
Far / Away
A quite versatile removal that can cost 2,3 or 5 and is very effective.
Grisly Spectacle
A removal that can mill, it's good to take out big creatures.
Psychic Strike A good counter to midgame that can mill. It's pretty situational, since most creatures can die to all those other removals, however it do it's work.
Jace, Architect of Thought A powerful defensive planeswalker that can get in the way while the deck buildup to the finishers.
Mind Grind
Deck finisher, period.
Pilfered Plans Good draw to keep up the card advantage and can mill meanwhile.