gwd1096

Yours is very similar to mine, the only things that i would consider would prolly be Mage Slayer and Primal Rage. Tell me what you think about mine!
http://www.mtgvault.com/ViewDeck.aspx?DeckID=164700

You might want to look at some more mana ramping spells since your commander cost 8 to get out.
I used a lot of them in my edh deck so im just going to post it up and let you take a look for yourself instead of listing them all.

http://www.mtgvault.com/ViewDeck.aspx?DeckID=139163

Fling is missing from your deck
Swing, Huck, Win

I like it alot, although to be honest i use it on myself. This allows me another way to choose the Persecutor, and or a creature that is buff at the moment; Bloodthrone for example after sacrificing a couple creatures and attacking you could play this and get 5 life off of her, or do it with a creature that has the Demonic Appetite on them and you don't want to sac any of your particular creatures. If your trying to control opponents creatures Flesh Allergy seems to work better though.

Archive Trap mills for 13 anyway.... not 5

Archive Trap can be free still and shriekhorn can be destroyed using about 5 different things and just straight up cancelled.

Alright so instead of taking up alot of space im going to post my deck link up here. Mine is a R/B discard deck, but i think you will find some of your answers in it.

http://www.mtgvault.com/ViewDeck.aspx?DeckID=148951

False Cure will solve that life gain problem and its mono-black... WIN

Alright so instead of listing alot of stuff im just gonna post my deck link lol
http://www.mtgvault.com/ViewDeck.aspx?DeckID=160251
only things that might help you are the death cultist, but take a look. The thing is full of one drops

I've actually got one, but the only problem with it is that its not in standard.

Alright so your going for a mill deck by the looks of it. Some cards that I would recommend for you would be Archive Trap for extra milling and it can be free if playing the right deck, Guard Gomazoa for defence, Cryptoplasm instead of the Renegade Doppelganger, Diminish and Unsummon for extra control of the battlefield, Treasure Hunt and Preordain for hand control this also will let you use Jace's Erasure. If you have sufficient funds then of course Jace, the Mind Sculpture and trade out the Seachrome Coast for Glacial Fortress. I would also consider taking out the Halimar Excavator since you don't have enough allies to use his ability well.
Also consider things for your sideboard like Flashfreeze against red or green.
You might consider running Nihil Spellbomb or something of the like so the opponent can't shuffle their graveyard back into their library using something like one of the Eldrazi god cards or Elixir of Immortality.

Front page boost ;)

Magma Spray over Galvanic blast or Shock. Crush for sideboard? Burning Inquiry just to mess with people.

flame slash, burst lighting, and i second the pyromancer's ascension

Your deck looks great, but i would have to say put 2 hexmages on sideboard and 2 gate keepers in for some added creature hate. And i have read every post up till this one so i understand why you like her, but to be honest most planeswalkers worth anything drop on turn 4. Though thats not to say that they have had one in their hand, so in a fast paced deck like this one you should be close to winning around turn 4-5. Also since your looking to keep swords off the field might be of interest to put in crush instead of shatter which will save you mana for another spell.

Flame Slash for crowd control, Comet Storm or Red Sun Zenith for big or small X damage, maybe Surreal Memoir, and i think i would pull Punishing Fire out of sideboard and run Combust instead since most life gainers are blue or white. Also throwing in Chandra's Spitefire with some Flings since you already have Kiln Fiends in here.
Hope this helps.

dont know if the Sphinx-Bone Wand is worth it since it drops on turn 7, but i think you should replace the fireball with comet storm. Add flame slash for a nice 1 mana 4 damage spell take out galvanic blast for it since its the same thing as burst lightning for you and dont have enough artifacts for metalcraft. Another thought would be adding reverberate.

Drop the fireball for comet storm, shock for burst lighting, Prodigal Pyromancer for Cunning Sparkmage, Fiery Hellhound for kiln fiend, and drop the lava axe for fling. Might also consider picking up Chandra Ablaze if you have the funds.

flame slash is missing from your list, and you might consider reverberate or a galvanoth

with the amount of artifacts you have in here you should check out galvanic blast