Hearthpwn

Deck can be easely improved by adding big taunts to keep yourself

The main idea of deck - stole imps to control board and made huge amount of damage:

• Shadow Madness to imp and let him dead.
• Convert - get imp for 3 mana
• Cabal Shadow Priest but it seems too slow for this deck. N1 for replacement
• you can use mind tech as well

and second one - mass removal:

• Auchenai Soulpriest + Circle of Healing combo
• Shadow Word: Horror amazing card for this deck, because it kills imps from both side. But let your imps die first in attack, and later kill summoned again
• Excavated Evil, Holy Nova andAbomination