Hearthpwn

Note: I came up with this deck myself but I don't know if a similar deck has already been posted, so if there is please tell me and I'll delete this deck.

Hi there! This is my first deck that I'm posting to hearthpwn which is a 480 dust druid deck I used to defeat the lich king on first try. Hope this helped!

Core idea: The core idea of the deck is to take advantage of the lich king's Purge the Weak "cheat" to leave only jade idols in your deck (similar to how you build your hemet-holy wrath otk), and combine with Gadgetzan Auctioneer's card draw to flood the board with jades. And win.

Mulligan:  mull for the cards that don't get destroyed-- namely, Innervate, Wild Growth, Jade Blossom, Jade Idol and Gagdetzan Auctioneer. Easy.

Everything else: Ramp up hard so you get Gadgetzan Auctioneer on the board and start your jade spawning asap. Trade away your weak jade golems to make space for the big ones. Once you've secured the board, go face. Win. Pack. Dust.

Tips: 1. Because Gadgetzan Auctioneer's card draw occurs before your spell takes effect, you should shuffle 3 Jade Idols into your deck when you hear "I'm almost out of cards!" 2. Even though the jade golems you summon on turn 1 get destroyed by Purge the Weak, you should still summon them to make your future jades bigger. 

Why these cards: Innervate, Wild Growth and Jade Blossom are here to help you drop your Gadgetzan Auctioneer asap. Gadgetzan Auctioneer and Jade Idol are key cards in this deck.

An even cheaper version? Take away 1 Jade Idol.

So that's it, hope it helped... and have a good laugh at those super expensive decks that hearthpwn told you to use in order to defeat the lich king!