Blue Mill

-Defender creatures
hover Barrier
Wall of frost

-Mill creatures
Crosstown courier

-Mill Enchant
Chronic Flooding


-Artifacts- dont trigger sages row but still consider

-mill
Codex shreder
Pyxis of pandemonium
Millstone

-Defender
Guardians of meletis
Pillar of war


Cloud fin, merfolk spy, and way of the theif are useless for mill, more or less, Crosstown courier would make way of the theif less bad for mill, but its not good to only have it usefull on one card.


Mill in standard is better with Blue Black (dimir guild) or out of standard (look up hedron crab, lolz)

good deck, but remember your aiming at an alternate win condition, wasting space with cloudfin just so you have a 1drop flyer, youd be better off with another mill card or defender
because of that way of the theif is not very useful, at most you make a defender a little stronger, but you can do that for much cheaper, and itd be better to use another miller or control card
Damage is useless in mill (outside of dimir... dimir makes damage mill simultaneously viable, though a little difficult to run, trust me mine loses quite a bit)

Neumonic wall, thassa's bounty, and psychic spiral are a little heavy mana wise. so is traumatize, but that one is def worth running.

mill is already hard since the goal is much higher, and requires a devotion to it that makes defending hard some times. Heavy mana mill cards are better in standard with some old school control or drawing power. speed is important, hence why tome scour is so necessary.

im supprised you pulled this out of standard though.
also the whole defender mill concept might be interesting in blue green, as there is a mana accel per defender in green and some cheeper blockers.

door keeper and sages row make an interesting combo for mill with blue defenders... i like it =3