Looks clunky and WTF? derp at first, but once seen in action, you'll see it at a totally different view.
Deck is a Way out of the ordinary control setup, Designed to set the tempo and control your opponents plays right from the get go with Duress and Appetite, I LOVE DEVOUR FLESH ! , It gets around Hexproof and Boros charm with ease! , and since most other control decks are running maybe 4 - 8 total creatures, this card is Amazing for spot removal, who cares let them gain a little life. Also have spears and dimir charms to get rid of low drops, although that isnt Dimir Charms intended use here.
Ok back on track, so turn 1 , duress / appetite (write down / remember their hand obv.) turn 2, handle their 1 drop unless its a mana geek or no threat drop, or dimir charm them at EoTT to choose / see what they have coming up to bat for their draw next turn, if its a bomb drop or something you dont like, you can save your mana for a dissipate, if not you can appetite / duress again as u see fit. Turn 4 is where it can get interesting, if you've used appetite / duress and havnt gotten rid of a future annoyance, Slaughter Game it which also gives you the oppurtunity to scour their Library picking out a target for your next slaughter games or Pithing needle. If you have been using duress and appetite, and Have removed their annoyances, you can drop Duskmantle Seer, this guy gets annoying FAST , giving you a huge advantage, and forces them to deal with him or always be a card behind during your turn. Turn 5 your opponent is probally trying to figure out wtf your win condition is since you havnt really showed anything besides removal as of yet, but thats just it ... This decks win con, Is simply put, removing theirs, making their defeat a slow and painfull process. After turn 5 it should be pretty much easy mode sailing if things went as planned, giving you the oppurtunity to Snapcaster and Flash back duress / appetite / slaughter games / dissipate / devour etc. to handle any threats.
--> Also if you're taking too much life loss from Duskmantle you can also pop him with Devour to gain 4 and put a stop to his effect.