This deck is great just the way it is, every hand looks good in the hand simulator. One good card to put in this deck would be corpse trader (from Innistrad). He's a 4- drop black human rouge that sacs one of your creatures to reveal your opponent's hand and they have to discard ANY card you choose. I thought it might be a nice addition since some of your monsters' have effects that activate when they leave the battlefield. Also its got a strong body and and can give you some much needed hand advantage over your opponent. Non-infected food for thought.