Hearthpwn

This is an unusual deck - an aggro-OTK one. 

The plan goes as follows: we control early game through cheap minions, mostly 1-cost ones, which we also generate a bunch of - and through rush given by Magic Carpet. Salhet's Pride and Cult Master are our draw engines, for lack of better ones (the one time I would prefer to see Divine Favor in Standard). 

What we are trying to achieve here is to control early to mid game while dumping our hand as efficiently as possible. Meanwhile we are performing another part of the plan - we are trying to draw our Aldor Truthseeker and Libram of Wisdom. Our goal is to make the libram cost zero for the rest of the game as it will be our actual win condition. And that is why we are playing an aggro-resembling deck - after we got the libram, our main goal is to cast it on as many minions as possible. For this purpose we use swarm strategy and when we have any board we buff our small minions with the libram, trade them one by one, getting the libram instantly back and repeating. This allows us to guarantee the libram targeting the most minions possible. 

And now to the OTK part of the gameplan: at some point our hand should contain preferably only two Blessed Champions and Lady Liadrin. Now we play Lady Liadrin and get all Libram of Wisdom we cast this game back to hand. Next turn we buff any minion with all the librams we've got and top it off with two Blessed Champions essentially quadrupling its attack. Assuming we buff a 1/1, to OTK an armorless but full-health opponent we need to have an 8-attack minion before buffing it with Blessed Champions, which, in turn, means we need to have at least seven Libram of Wisdom in hand - and we do have them if we have been following our strategy. Also this is the reason why we don't play any other cards that target friendly characters - we have to make sure Lady Liadrin returns us only Libram of Wisdom, we cannot afford getting anything else since hand size is limited and essential.

TLDR: we control early and mid game through typical aggro means, meanwhile we buff as many minions with discounted Libram of Wisdom as possible. We are ready to go off when we have only Lady Liadrin and two Blessed Champions in hand. We fill our hand with Libram of Wisdom and next turn we turn any survived minion on board into a Voltron, OTKing the opponent.

Other parts of the deck worth mentioning: we have four rush sources in the deck letting us turn our Infectious Sporeling into a pseudo-removal. Also Rustsworn Cultist should be a great way to make sure we have a sticky board of small minions which is the exact thing we want.

So, this is it, I hope you like the deck and find success in trying it out!