Hearthpwn

Couple of cards you might be wondering why are in deck:

-Spiked Hogrider can easily be replaced by something else Warlock might get from Un'goro. That or Argent Horserider (jk, he's out of standard by then, would be nice tho).

-Crystalweaver seems like a great thing with at least 8 demons in deck. Not to mention deck is trying go go for really valuable plays at start of the game and have portal as soon as possible. Him and infinite demon imps = great thing in my book

-Forbidden Ritual for cases when you won't have board and to force opponent to use board clears on those instead of imps.

-Demonfire a buff for already well statted minions or removal for annoying minions you don't want to trade at or can't deal with other way.

Things you could also have in deck: Dire Wolf Alpha, Defender of Argus and maybe something else I don't have in my head atm to recall .-.