Hearthpwn

This deck is strictly for fun and is not recommend for climbing the ladder.

  The actual win condition is just out healing damage and overpowering your opponent with huge lifesteal and taunt minions but if that doesn't work out for you, you're also setting up an infinite Da Undatakah taunt that blows up your opponent's board and potentially heals and gives you a 5/3 (or 4/2) weapon. You can't be afraid to take damage with this deck and once you're used to playing it and managing said damage, you won't be.

  The mulligan is Crystology , High Priest Thekal and Paragon of Light also you really want to see a Doppelgangster early on. You want to start buffing ideally lifesteal minions Immortal Prelate and Sergeant Sally asap. Try to play Da Undatakah after Immortal Prelate and your other deathrattle minions except Silver Vanguard to ensure you get return to BEFORE draw from. Don't play vanguard until undatakah is in your hand or has already died once and has the appropriate deathrattles. In the case of the latter, when paired with Spiritsinger Umbra you can play vanguard to to summon undatakah to clear the board, heal yourself and weapon up and safely shuffle it back into your deck. Same with umbra and unda if the others are dead when you summon unda. 

 Crazy ridiculously fun things can happen with this deck as well as some good vengeance for smug aggro and other players. Play smart and its a soul crusher for sure. Enjoy! 

[Update] Dropping the third and what I think to be the final revision save for toying with the idea of cutting tirion for lich king. These changes make the deck faster and give you a more solid option with doppelgangster to overpower your opponent. Which as I've said is the actual wincon here . Enjoy