This is a casual Black Blue Mill Control
It's not nearly as fast at other mill decks because it is a control deck. The deck is fairly slow and relies heavily on landing Consuming Aberration on turn 5. It has removal, permission, and card draw that all mill.
Mainboard:
Jace's Phantasm - good solid mill creature. Usually a 1 drop 5/5 with flying.
Thought Scour - Potential to mess up opponent's deck interactions - Scry, Ponder, Contingency Plan, etc. Also draws a card. Combos well with Consuming Aberration.
Consuming Aberration - Potential win condition outside of milling opponent's entire library. Both abilities are nuts.
Mind Grind
- Solid mill card. Mind Funeral is probably better overall but this is all I can get my hands on.
Grisly Spectacle
- Good/Okay removal spell that also has potential to mill quite a few cards. A bit expensive but fits theme very well.
Pilfered Plans
-
Divination
that also mills two. Card draw that helps reach end goal.
Psychic Strike - Hard counter spell that also mills two. Better Cancel for mill decks.
Dimir Charm
- I've seen a lot of people bashing this card but to me it doesn't seem all that bad. It can kill a small dude or mess up your opponent's deck. It also has a weird sorcery counter aspect to it.
Crypt Incursion - Good for staying alive since the opponent's graveyard will likely be full of creatures.
Sphinx's Tutelage is very good for milling as there are 8 draw spells in this deck.