Hearthpwn

While I agree that this list lacks a bit of early game, I really like the concept and think this could be tweaked to be a powerful deck. I've thought about making something like this before.

I think the new Tar Creeper could be good in here. You could also include Wickerflame Burnbristle to give yourself some more early game. On the topic of your early game, I don't think that Selfless Hero is great in here because it feels like you aren't going to get value out of it if you play it on curve. 

One last note. As great as Dr. Boom is, he's not the best in N'Zoth decks becasuse he lowers the average quality of the creatures you can return. I would replace the Dr. with Cairn Bloodhoof, who is great and should be played even if you don't cut Dr. Boom.

That's all I can think of now. I might start working on something similar, so I'll share that with you once I get it to a point I'm happy with.

too greedy deck.

Very bad deck, even on low ranks (i was rank 15). Lost 5 in a row. This deck has a very big late game, but he's way too slow. You're crushed before you have time to expand and play your big minions.