[Standard][Opinions]Orzhov Auras

I think two colors could work alright, but I would swap some things around.

1) Wight of Precinct Six has the potential to be HUGE, but he needs creatures in their graveyard.  This means you need removal (of which you only have enchantments) and potentially some discard/mill action.  Thankfully, GTC has Devour Flesh for spot removal and Grisly Spectacle.  I know the spectacle is a high cost to cast; however, it mills them some to help build up the Wight.  If you were hoping to win solely by populating their 'yard with combat, you'll likely never see the Wight make it to any real size.

2) What were you planning on bonding the Silverblade Paladins with?

3) I'm not sure Contaminated Ground will do much.  I mean it would be convenient in some sort of a control deck to take care of an opponent's Cavern of Souls so you can get your counter-magic online.  Otherwise, there's way too much mana fixing available for this really to achieve much.

4) As another aura to add, I would suggest Skeletal Grimace it might not give you the added punch you're looking for; however, it provides regeneration, which is priceless in a world with Supreme Verdict.

5) I know things like Dead Weight are cheaper than Oblivion Ring, but if you kill the creature they're off the field and not helping your armor.  The added mana cost is easily justified by the increased versatility of the rings AND they stay put.

6) Lastly, nothing with extort?  I could see at least Blind Obedience making its way in here as a means to stop aggro decks while also letting you ping away with any extra mana.