Deathless Mill

Very interesting mill idea. Even still though I feel like there is something missing.

I keep wanting to add a third color either green and go "BUG" or white and go "Esper"

The reasoning behind wanting that third color is it seems as though your creatures are weak.
--Consuming Aberration can get HUGE but(!) it can also die fairly easily if your opponent does something like rest in peace, or elixir of immortality. Something that effectively removes the graveyard can make a serious impact on your here.
--Mirko Vosk is only a 2/4 which can mean that he may very well die in the air to a number of blockers. This either supports the need for some kind of "buff" or more removal.
--Mortus Strider, while he isn't here to attack really I'm assuming, he is still a 1/1 which can mean that against decks with trample your going to lose on defense. Same thing as Mirko Voss, either buffs or more removal. *I am assuming the reason reason for this guy is Undercity Informer
--Undercity Informer, interesting, decent mill I suppose but really doesn't do much otherwise and I'm going to guarantee you'll lose the race of milling your opponent before you die to pretty much any deck

The only other card I don't particularly like here is the Dimir Charm. None of it's effects I think make it worth playing over either Negate or Doom Blade(or hero's downfall).


Now the reason I would go for BUG is Master Biomancer, he can be slow and your creatures need to come out after him however it would ensure the survival of your creatures in several cases. Then you could theoretically add in Prime Speaker Zegana which could be BRUTAL with Consuming Aberration.

Now Prime Speaker brings to attention something else, a need for draw. Your going to want something to keep you fueled up while going for a mill out strategy. You currently have no draw which means your likely to run dry before your opponent, with larger resolved threats, while your relying on having a ton of spells to cast to trigger Consuming Aberration, or just hoping they mill the opponent themselves such as breaking // entering. I think the draw you want is "Pilfered Plans" because it mills an opponent for two and you'll draw two cards.

While in Green you could also add Scavenging Ooze which would be really really interesting with the mill because in most match-ups you'll be able to mill over a ton of creatures for S.Ooze to eat gaining size and life for you.

With all of that said I think your up for a major revamp because slight editing of numbers is going to get to drawn out and complicated.
Here is my attempt at building the deck I think you could/should be aiming for: http://www.mtgvault.com/snakerunners/decks/theros-bug-mill/

While I didn't add Ashiok, it wasn't because I think she is bad it's just I think there were better cards for her slot in this deck. You could however disagree with some of my choices and add her back in by say -1 Zegana -1 Hero's Downfall +2 Ashiok. The land base isn't going to be perfect as I tend to make these decks as a quick representation of ideas instead of "solid finished builds" so you may need to tweak it a little. It shouldn't be terribly off as I focused on U/B and splashed the green and even still there is 10 green sources at least. This minimal splash does support removing Zegana possibly because she is a little color heavy however I think she makes a solid impact on the game. Mortus Strider and Undercity Informer are each just a little weak and their milling too slow. While this deck may still be a little on the slow side for milling I think it shows better staying power with larger creatures, some life gain etc.

Sideboard is just a representation of spells and such that I think could be useful not necessarily mainboard but in certain match-ups. Pithing Needle is a decent way to deal with a few cards such as ætherling, and planeswalkers. Fade into Antiquity is a good way to deal with the gods and elixir of immortality. Putrefy to deal with more creatures and if your think your going to be threatened by artifacts such as pithing needle, or again elixir.



If going BUG is too expensive or too risky here is a mix up on just straight U/B: http://www.mtgvault.com/snakerunners/decks/theros-ub-mill-control/

While ultimately I probabaly didn't make it much cheaper for you I think it might be a little easier and I really wanted to go with this idea of Duskmantle Seer and Thassa. Anyways what I was playing a here was trying to get into Thassa's Devotion, as a 5/5 on turn 3 or 4 is really solid. Mono-blue had some power for a reason and better yet so should you when you have some solid devotion and then also the addition of black for some power. Your still open to Hero's Downfall, Doom blade, Ashiok, pilfered plans, psychic strike, far // away, all of which are very solid options to have open to you that you need black for. The Thassa not only plays well in card advantage letting you scry away unnecessary cards but can also ensure minimal life loss from Duskmantle Seer but ultimately still gaining that card advantage while having a 4/4 flyer that can get in for decent damage. The other devotion creatures do some work of their own. Tidebinder can slow down some decks you need to and hit a few important creatures like boros reckoner, or even larger green creatures. Frostburn is almost like a wall for many faster decks with smaller creatures coming in sizes of 2/2, 2/3, 3/3 etc. and it can even come in on the back swing and deal decent damage, also again plays well into blue devotion.

Now ultimately your not only playing into the devotion for Thassa, though it is a solid reason to play into blue devotion, but also for Nykthos. Being able to gain that extra mana advantage could really push for a faster consuming aberration, or the real target a high X on mind grind. Imagine tidebinder, frostburn, nightveil out for turn 4 that is a mind grind for at least 6 plus whatever else your getting from nightveil and or consuming aberration. While I said Consuming Aberration is problematic when you don't have anyway to combat an elixir of immorality I think I'm down playing the aberration enough where it's not going to be as problematic for the deck if something goes wrong. Besides your going in for enough damage with other creatures like Duskmantle and Thassa to win without milling.

Something I just realized could make it in but I'm unsure of it's place is Bident of Thassa, it helps with devotion and can draw you cards which as aforementioned is important.



---Sidenote: I wanted to find room for nighthowler because it can be a powerhouse creature in a mill deck. I like it with the idea of Duskmantle seer however I'm just not convinced it plays well because you kind of really want thassa to help minimize the life loss and such from duskmantle and if your going to run thassa you want blue devotion and nighthowler impacts negatively on the deck then because you don't want to dwindle the blue devotion via the creatures you play or even to remove spells that help the deck out a ton. I'd come up with a random third idea but I'm just not 100% sure what it would be and why it would be better than either of the other two. If I go for Consuming Aberraton and Mirko Vosk and Nighthowler again I'm really playing into losing creatures via graveyard removal. BUG Rites or Junk Rites maybe with a creature heavy deck and self mill, Lotleth+Nighthowler discarding creatures to Lotleth pumping it for 2 each time. BUG you could do some mill with mirko vosk, or something and then whip of erebos Prime Speaker for a pseudo-sphinx's rev in BUG Rites. /shrug

I've gone on too long and I'm probably just given you as many questions as answers and therefore probably wasn't too helpful. Hope that isn't the case. Good luck with the deck.