Hearthpwn

A different kind of discard deck who's win condition is finishing the quest turn four with cataclysm. Don't play anything (use hero power if necessary to draw cataclysm or fill hand if you don't start with the coin) unless you have the soularium or expired merchant until turn four, it will reduce the discard fuel greatly.

 Play cataclysm and finish the quest turn four, play the nether portal turn five. Do NOT play the coin to get cataclysm out early, that reduces the number of cards discarded by one potentially not getting the quest completed in one play, besides, you won't be able to play the portal for another turn anyway. It's worth waiting, trust me. Once the portal is out, play recklessly, sacrificing anything and everything to win. A large amount of High Priestess Jekliks is a secondary win condition.

Everything except the quest is discard fodder. It's a shame if you discard Bloodreaver Gul'dan, Lord Godfrey, etc. but they are not needed to win, and should be counted as fodder as well. Soulwarden will help get them back if you are really that torn up about them.

This deck has been pretty good to me the past few years (it's been updated as new expansions come out) in bronze and silver. I give credit to people not being prepared because discard/rampant-disregard-for-own-minions isn't that popular of a strategy. 

Malchezar's imp could be added to the deck if you really feel it to be necessary. Tiny knight of evil is not in the deck because it dies to being discarded/destroyed by cataclysm anyway, and would just take up space that better discard fodder could be in.