Hullaconda

the killer to your deck is Leyline of the Void. anything that would go to the graveyard is exiled instead. I use 3 in my mill deck. The best part about it is that if its in your opening hand it comes into play automatically without having to pay its mana cost.

Or the even easier route would be Stony Silence - Activated abilities of artifacts can't be activated.

Or Angel of Jubilation - Flying
Other nonblack creatures you control get +1/+1.
Players can't pay life or sacrifice creatures to cast spells or activate abilities.

The angel counters this whole deck and stony silence is just a piss off card.

I really like the flow of your deck. but here are some things to think about.

You can remove some counterspells for a Spellskite or 2

i fixed it now its done. had to put 2 Mirran Crusaders in.

the 1 drop cards are win cons in themselves. Beast of burden = God
Karn = planeswalker god
Tezzeret = Artifact planeswalker god

by turn 5 i have minimum of 10 mana.

what if you play against someone with endless mana leaks , rewind's , cancel's or Vapor Snag's. They can just sit back and counterspell everything u bring out.

take a look at my artifact Deck it has endless win cons with alot of mana

http://www.mtgvault.com/ViewDeck.aspx?DeckID=369400

I think you have way too much mana. I like it for modern but I still think you have way too much mana

Also Get Oona in this Deck she is a Nice one drop. Also a nice Creature to have is Dimir Doppelganger i know it does not mill but can add very good defence with a milling deck.

Id get rid of Archive trap as its only usefull if someone is searching their library. You Also need 4 Dark Rituals if you want to have a good mill deck. Also Twincast x 4 is a must I love Double Twincasting a Mind Funeral so an opponent has to mill till he or she hits 12 lands.

get some Land Destruction in there and some rampant growth's so you can get your mana fast and destroy opponents lands while waiting for your big guns. Id Remove bonfire and Blessings for Branblecrush and Melt Terrain. I find playing Undying is pointless if your just going to put +1+1 counters on them. Undying i find is better against a Mill Deck. A very nice artifact you could add is Akroma's Memorial.

I Say Remove Golem Heart and Add Elixer of immortality x4 its better than golem gives u 5 life and shuffle your graveyard into your library with the elixer.

What About Elbrus , the Binding Blade If you had 4 Omnithropter or Vault Skirge you could equip Elbrus to a flying creat fly over and do damage to a player and have Elbrus transform into a 13/13 with flying trample and intimidate.

Here is a link to my Artifact deck so you know what im talking about

http://forums.mtgsalvation.com/showthread.php?t=398659

cinder pyro is meh for 1 u can cast Goblin fireslinger and he taps to do 1 damage to target player
also Fork is a great card for a burn deck , Shock is another great card. For my burn deck the highest casting cost is 3 red which makes it easy so you if you only have 3 lands you can play everycard in your deck without worrying about mana.
Chandras Pheonix is a great card. Deck looks good but it could be alot Faster, Try making it so you win by turn 5.

theres not enough mill cards. For mill decks the best 2 colours are Blue and black and as for mana add some dark rituals.

I dident Check the cards in detail but a quick thought have you thought of using any cards with "Affinity" making all artifacts cost less to play ?? Also if you can get Unwinding Clock you can tap out on your turn and then untap at the next players untap step so you can block or whatever you want

Unwinding Clock is perfect for this deck !!

also Unwinding Clock is perfect for an artifact deck

just so you know Progenitus can be removed with World effects like Wrath of God since it does not target it. and only suggestion i can think of is cards that have the ability "Affinity" so your Elbrus, the Binding Blade will cost much less to bring into play. Also I run a deck sort of like this and if you add some small low cost flying creatures your odds of Elbrus, the Binding Blade transforming are greater especially if its equipped to a flying creature. Hope this helps.

i was looking into making a deck like this with x2 Elbrus, the Binding Blade and was thinking of throwing in 4 x Geosurge so i would be able to cast Elbrus on turn 4 but my creatures would be Hellspark Elemental x4 and Goblin Fireslinger x 4 so once i equp it to either hellspark or better yet the goblin firslinger id do direct damage to a player allowing me to transform Elbrus into a 13/13 on roughly turn 5 or 6. What are your thoughts on this ?

add 3 leyline of the void and you will really piss of your opponents especially if you draw one on your opening hand.

put more leylines in the odds of getting the 1 in your hand every opening draw is slim

if you like hexproof for artifacts try Indomitable Archangel