Possible Additions / Sideboard Ideas:

1x Counterspell
1x Dissolve
1x Geralf's Mindcrusher
1x Jace's Archivist
1x Judge's Familiar
1x Mizzium Skin
1x Murmuring Phantasm
1x Selective Memory
1x Thassa, God of the Sea
1x Unsummon
1x Wingcrafter

Budget token mill. The main win con is is to get out Undead Alchemist, usually milling out the opponent the turn I lay him if I have out a couple Altar of the Brood. If not, put Aqueous Form on him to get through. Swiftfoot Boots are to protect both Undead Alchemist and Fog Bank from removal. Trying to keep the price low, but still be competitive. Any help is welcomed. No clue what to do with a sideboard.

Maybeboard is just a collection of cards that I'm considering adding to improve consistency

Break down:

Undead Alchemist - The main guy this deck is built around. Put him out with a couple Altar of the Brood]] and you'll usually mill your opponent into the ground.

Aqueous Form - Slap it on Undead Alchemist to get a mill chain going, or on Jace's Phantasm to do some damage. The scry is nice too

Swiftfoot Boots - Just gives my Alchemists protection from removal

Trinket Mage - Is there to tutor Altar of the Brood if I don't have enough out. Also gives me a disposable body for chump blocking

Silver Myr - Blue mana dork. If I can get out Undead Alchemist on turn 3, all the better for me. Also for chump blocking in a pinch.

Fog Bank - Definitely needed to block any incoming threats

Halimar Depths - Lets me look at my cards and set up a game plan, so I can at least dictate my card draw. Worth it coming in tapped

Traumatize - If the game is running slow, or I don't have enough Altar of the Broods out, this really helps get Undead Alchemist going

Dakra Mystic - Another utility card. I can get some card draw over it, or, If they reveal a creature card, I can have them discard it to set a chain off with Undead Alchemist

Sphinx's Tutelage - Just another source of mill that activates at least once a turn

Mind Spring - Gives me card draw, and sets off Sphinx's Tutelage

Ludeciv's Test Subject - Gives me a nice defender, and gives another threat of the field for opponents to worry about.

Wall of Frost - Gives me a bigger body than Fog Bank in case I'm running against burn. Also it's ability is wonderful for stalling. It's cmc is higher though, so it's a bit more difficult to get out if I'm trying to put out multiple things in one turn

Thought Scour - Gives me a bit of mill, replaces itself and can mill even more with Spynx's Tutelage out.